This document provides an overview of computer fundamentals including:
- The basic components of a computer system including input, output, CPU, and memory.
- Types of computers classified by technology as digital, analog, and hybrid. Digital computers are further divided into microcomputers, minicomputers, mainframes, and supercomputers.
- The differences between hardware and software, with descriptions of system software like operating systems and compilers/interpreters, and application software.
This document provides an introduction and history of computers. It defines what a computer is and who a user is. It discusses data and information and how information technology uses computers. It then outlines the history of computers from mechanical computers in the 1600s to modern electronic computers. It describes the four generations of electronic computers from vacuum tubes to microprocessors. It concludes by defining types of computers like analog and digital and classifying computers such as supercomputers, mainframes, workstations, servers, desktops, laptops and palmtops.
A computer is a machine that can be programmed to manipulate symbols. Its principal characteristics are: It responds to a specific set of instructions in a well-defined manner. It can execute a prerecorded list of instructions (a program). It can quickly store and retrieve large amounts of data.
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There are four categories of computer languages: high-level languages, low-level languages, assembly language, and machine language. High-level languages are closer to human language and need translators to be understood by computers. Low-level languages are closer to machine language and do not need translators. Assembly language sits between high-level and machine language by using mnemonic codes. Machine language consists of binary and is the only language computers can directly understand. Translators like compilers, interpreters, and assemblers are used to convert between these language categories.
The History and Generation of ComputersShayan Amir
The document discusses the five generations of computers from the first to fifth generation. It describes the key characteristics of each generation as computers evolved from using vacuum tubes in the first generation to integrated circuits in the third generation to microprocessors in the fourth generation. The goal of the proposed fifth generation is to develop devices with artificial intelligence that can understand natural language and have learning capabilities.
This document provides an overview of a computer architecture course. It defines computer architecture and discusses its importance. The course will cover fundamental concepts, the components of Von Neumann computers, and how hardware supports programming languages. Specific topics will include macro-scale components like motherboards, micro-scale internal components of microprocessors, and large-scale architectures powering data centers. The history and evolution of the field is also summarized.
Computers can be classified in several ways, including by purpose, type of data handled, and size. The main classifications by size are:
- Micro-computers, which include personal computers and workstations used by individuals.
- Mini-computers, which are more powerful than micro-computers and used for general purposes.
- Mainframe computers, which offer high processing and storage for multiple users simultaneously in large organizations.
- Supercomputers, which are designed for scientific jobs and contain many parallel CPUs, making them very fast but also very expensive.
This presentation provides an overview of computer generations from the first to fifth generation. It discusses the key developments and technologies that define each generation, including vacuum tubes, transistors, integrated circuits, microprocessors, and artificial intelligence. The main advantages and disadvantages of each generation are also summarized. Finally, the presentation describes different types of computers like microcomputers, minicomputers, mainframes, and supercomputers.
This document provides an overview of common computer components and terms. It describes typical hardware components like the monitor, motherboard, CPU, RAM memory, expansion cards, power supply, storage drives, keyboard and mouse. It also discusses software types, input/output devices, memory units, networking, and other concepts. Diagrams show the relationship between input, CPU, and output devices, as well as examples of RAM usage.
Input And Output Devices
Prepared By Harsh ,Mehar , Astha and Kalpana
Students Of Birla Institute Of Technology,Patna Campus
Department: BBA Session 2016-2019
Guided By : Ritesh Ravi Sir (Our Computer Teacher)
This document provides an overview of operating systems. It begins with an introduction defining an operating system and its role. It then discusses the history of operating systems and the four main components of operating system software: memory management, processor management, device management, and file management. Finally, it outlines eight common types of operating systems including batch, multiprogramming, desktop, real-time, and distributed operating systems.
CPU-Central Processing Unit (With History and Complete Detail)Adeel Rasheed
CPU is the heart and brain of a computer. It receives data as input.The Central Processing Unit (CPU) is simply the central processor or the processor where most calculation takes places.
The document discusses the history and components of the central processing unit (CPU). It describes how the CPU originated from concepts developed in the 1940s and evolved from large mainframe computers to smaller microprocessors. The key components of the CPU are the control unit, arithmetic logic unit, and memory unit. The CPU functions by fetching instructions from memory, decoding and translating them, executing calculations and data movement, and storing results.
This document provides an overview of basic computer system organization. It discusses that a computer accepts raw data as input and processes it using a program to produce output. The main components are the hardware, which are the physical parts, and software, which are the recorded instructions. It then describes the basic units of a computer system including the input and output units, central processing unit (CPU), memory, and storage. The CPU contains the arithmetic logic unit, control unit, and registers. The document also discusses the different types of memory, including RAM, ROM, and their characteristics. Finally, it covers the different types of software including system software like operating systems and language processors, as well as application software.
This PowerPoint Presentation consist the data title "Basics of Computer. This slide share will definitely helpful in all the viewers. It is framed with lot of best and attractive pictures with suitable examples and images. It will be very much useful to the beginners learners of computer. It covers the following points, viz., 1. Introduction to Computer 2. Main Parts of Computer 3. Types of Computer 4. Storage Unit vs. Memory Unit 5. Classification on Working System 6. Types of Network 7. Classification of Computer- Based on Size 8. Some Important Extensions. The above points were discussed in this powerpoint presentation.
The document discusses operating systems, including their definition, structure, features, types, advantages and disadvantages. It defines an operating system as software that manages computer hardware resources. Operating systems provide a user interface, coordinate tasks, establish internet connections and more. They have a kernel at the core and a user interface. Features include being graphical, supporting multiple users, tasks, processors and threads. Types include standalone, server and embedded operating systems. The best operating systems of 2013 are discussed as Ubuntu, Windows 8, Macintosh, Windows 7 and Linux Mint.
The document discusses the components and functions of a basic computer system. It explains that a computer consists of hardware and software. The hardware includes components like the central processing unit, memory, storage devices, input devices, output devices, and other external devices. The software includes operating systems, application software, and utility software. A computer performs four basic functions - input, processing, output, and storage. It takes in data through input devices, processes the data using programs, produces output through output devices, and stores processed data and instructions in memory and storage.
The document discusses the five generations of computers from the first generation in 1946 to the present fifth generation. The first generation used vacuum tubes and were large, heat-producing machines. The second generation introduced transistors, reducing size and heat. The third generation used integrated circuits which further reduced size. The fourth generation used microprocessors on a single chip. The fifth generation uses artificial intelligence and neural networks. Each generation brought increases in processing speed, memory capacity, programming languages, and commercial applications.
The document presents an overview of operating systems. It begins with an introduction that defines an operating system as software that controls computer resources and provides an interface for users. The document then discusses the structure of operating systems, including their role in managing resources and acting as an interface between hardware and users/programs. It outlines the main functions of operating systems such as process management, memory management, file management, security, and command interpretation. Finally, it briefly describes some popular operating systems like DOS, Unix, and Windows NT and concludes with the importance of operating systems for running applications and using computers.
This document provides an introduction to computer organization and architecture. It defines key concepts such as digital computers, computer hardware, software, and computer organization. It also describes the basic components of a computer system including the central processing unit (CPU), control unit, arithmetic logic unit (ALU), registers, and memory. Additionally, it explains register transfer language and different types of micro-operations including register transfer, arithmetic, logic, and shift operations. The document uses diagrams and examples to illustrate computer hardware components and how information is transferred between registers and memory.
The document defines what a computer is and provides details about how it works. It can be summarized as:
1) A computer is a device that processes data according to instructions to convert it into information. It works through an input-processing-storage-output cycle.
2) Computers are popular due to their speed, large storage capacity, reliability, and adaptability. They are now used in many fields.
3) Computer hardware includes input devices, a processing unit, storage devices, and output devices. The processing unit contains a control unit, arithmetic logic unit, and memory unit and uses a fetch-decode-execute-store machine cycle.
The document provides an introduction to computers including definitions, components, and uses. It defines a computer as an electronic device that can accept data as input, process the data, and produce information as output based on stored instructions. The key components are identified as the input devices, central processing unit, memory, output devices, and storage devices. Examples of input devices include keyboards, mice, and scanners, while monitors and printers are identified as common output devices. The document then discusses the various types of computers from microcomputers to mainframes and supercomputers as well as their characteristics and uses.
The document provides an overview of the introduction to computers. It discusses key topics like the meanings and types of computers, the evolution of computers through generations, computer systems including hardware and software, data, procedures, people, and communication/connectivity. The types of computers are classified based on size and power from personal computers to supercomputers. Computer hardware is divided into input, output, processing, storage, and communication hardware. Software is classified as application software and systems software. Data represents raw facts in computers using binary digits while information is processed data. People are important as they design, develop, operate and use computer systems.
This document provides an overview of key topics related to introduction to computers including:
- Definitions of computer, types of computers categorized by size and power, and the evolution of computers through four generations.
- The basic elements of a computer system including hardware, peripheral devices, and software. Hardware consists of components like the CPU and memory while software includes operating systems and application programs.
- How data is represented digitally using binary digits and coding schemes and how it is processed into meaningful information.
- Key roles in a computer system including users, professionals who design and operate systems, and end-users who utilize computers for tasks.
This document provides an overview of computers including:
- A computer is an electronic device that processes data into useful information. It includes hardware, software, data, and users.
- Computers can be classified based on their processing capabilities as supercomputers, mainframes, minicomputers, microcomputers, and wearables. They can also be classified as analog, digital, or hybrid based on their input/output signals.
- General purpose computers can solve many types of problems, while special purpose computers are designed to solve specific problems through dedicated programming. Servers are computers designed to share resources over a network.
Computers enable the efficient processing and storage of information. They are composed of hardware and software and exist in a variety of sizes, from embedded computers inside devices to supercomputers used for highly complex tasks. A basic computer system includes input devices like a keyboard, a central processing unit that performs calculations, and output devices like a monitor that present results.
The document defines basic concepts of a computer including its elements, characteristics, generations, classifications, and architecture. A computer operates on various types of data and has hardware, software, firmware, and procedures as its main elements. It is automatic, fast, accurate, diligent, and can store and process huge amounts of data. Computers have progressed through five generations from those made with vacuum tubes to today's systems incorporating artificial intelligence. They are also classified by their technical uses and commercial applications such as supercomputers, workstations, mainframes, and microcomputers. The core components of a computer's architecture are the input, output, memory, and central processing units which allow it to accept, store, process, and produce data and
This document provides an overview of computers, including their classification, components, and generations. It discusses how computers can be classified based on technology, purpose, function, and size/speed. The main components of a computer are hardware and software. Hardware includes physical parts like input/output devices and storage. Software includes system software, applications, and utilities. The document also outlines the five generations of computers from the first vacuum tube-based generation to the emerging fifth generation focused on artificial intelligence.
This document provides an introduction and classification of computers. It discusses that a computer accepts data as input, processes it, and produces output which can be stored. It then describes the basic components of a computer including input devices like keyboards, central processing units with arithmetic logic units and control units, and output devices. The document also covers different types of software and classifications of computers by purpose, data handled, size as mainframe, micro, mini, and super computers, as well as digital, analog, and hybrid computers.
A computer is an electronic device that processes data according to instructions given to it. It takes in data through input devices, manipulates the data according to programmed instructions, and outputs the results. Computers have evolved through several generations from vacuum tube-based machines to today's digital devices based on integrated circuits. They have become indispensable tools in organizations due to their speed, accuracy, memory capacity, and ability to perform repetitive tasks without tiring. A computer's central processing unit (CPU) controls the various components and executes instructions. Input devices allow data and instructions to enter the computer, while output devices such as monitors and printers allow the processed results to be seen or printed.
The document provides an overview of computers including:
1. Computers accept input, process data, store data, and produce output. They are electronic devices that can perform calculations quickly and accurately.
2. Computers have large memory, can be programmed for different tasks, and never get confused or tired like humans.
3. There are two main types of computers - analog and digital. Digital computers are now more common and represent data using binary numbers.
The document provides an overview of computers including:
1. Computers accept input, process data, store data, and produce output. They are electronic devices that can perform calculations quickly and accurately.
2. Computers have large memory, can be programmed for different tasks, and never get confused or tired like humans.
3. There are two main types of computers - analog and digital. Digital computers are now more common and represent data using binary numbers.
Charles Babbage is considered the father of computers. He designed the Difference Engine and Analytical Engine in the 1820s and 1830s, respectively, which provided a basis for modern computers. A computer processes data into information using hardware and software. Hardware is the physical components, while software contains instructions. Computers have evolved through five generations from vacuum tubes to transistors to integrated circuits to microprocessors and now artificial intelligence. Computers are versatile machines that can rapidly perform calculations with high accuracy and store large amounts of data.
The document summarizes different types of computer systems including microcomputer systems, midrange systems, mainframe systems, and supercomputer systems. It describes the basic components and functions of a computer system including input, processing, output, storage, and control. It also discusses various input, output, and storage technologies used in computer peripherals.
This document discusses the components and functions of a basic computer system. It describes how a computer system consists of hardware and software. The key hardware components are the central processing unit (CPU), memory (RAM and ROM), and input/output interfaces. The CPU contains the arithmetic logic unit, control unit, and storage unit. It interprets and executes instructions to perform operations on data. The control unit manages data transfer between components. Memory stores instructions, data, and results. Software enables interaction with the hardware and allows computers to perform tasks. A computer system gathers data as input, processes it, outputs information, and stores data/information in memory.
This document classifies and describes different types of computers. It discusses analog computers, digital computers, and hybrid computers. It then focuses on classifications of microcomputers like home computers, personal computers, mini computers, laptop computers, mainframe computers, super computers, wearable computers, and palm computers. For each type of computer, it provides a brief description of its key features and examples. The overall document aims to provide an overview of how computers can be classified according to their size and logical functions.
This document provides an overview of computers, including:
1. It defines a computer as an electronic device that accepts data as input, processes it, and provides the desired output. The basic functions of a computer are input, processing, output, storage, and control.
2. Early calculating devices included the abacus and Napier's bones. Modern computers have evolved from machines like Pascal's calculator through generations using different technologies like vacuum tubes, transistors, integrated circuits, and microprocessors.
3. Computers are classified based on their size and capabilities as microcomputers, minicomputers, mainframes, and supercomputers. The basic components of a computer are the input, output, central processing unit
The document provides an introduction to algorithms and their analysis. It defines an algorithm as a step-by-step procedure for solving a problem in a finite amount of time. The analysis of algorithms aims to predict the cost of an algorithm in terms of resources and performance. There are two main aspects of analyzing algorithmic performance - time complexity, which measures how fast an algorithm performs based on input size, and space complexity, which measures how much memory an algorithm requires. Common asymptotic notations used to represent time complexity include Big-O, Omega, and Theta notations. The time complexity of common algorithms like searching, sorting, and traversing data structures are discussed.
The document discusses data file handling in Python. It covers the basics of opening, reading from, and writing to both text and binary files.
The key points covered include: opening and closing files, different file access modes, reading methods like readline(), readlines(), and read(), writing methods like write() and writelines(), random access methods like seek() and tell(), pickling and unpickling using the pickle module, and the differences between text and binary files.
1. Inheritance is a mechanism where a new class is derived from an existing class, known as the base or parent class. The derived class inherits properties and methods from the parent class.
2. There are 5 types of inheritance: single, multilevel, multiple, hierarchical, and hybrid. Multiple inheritance allows a class to inherit from more than one parent class.
3. Overriding allows a subclass to replace or extend a method defined in the parent class, while still calling the parent method using the super() function or parent class name. This allows the subclass to provide a specific implementation of a method.
Constructors and destructors in Python.
Constructors are special methods that are called automatically when an object is created. They initialize variables and ensure objects are properly initialized. There are two types of constructors: default and parameterized. Default don't take arguments, parameterized do.
Destructors are called when an object is destroyed. Defined using __del__(), they are useful for releasing resources like closing files before a program exits.
The document then provides code examples of classes with constructors, parameterized constructors, and destructors. It also discusses Python's garbage collection and how the collector deletes unneeded objects to free memory space.
Here is a Python class with the specifications provided in the question:
class PICTURE:
def __init__(self, pno, category, location):
self.pno = pno
self.category = category
self.location = location
def FixLocation(self, new_location):
self.location = new_location
This defines a PICTURE class with three instance attributes - pno, category and location as specified in the question. It also defines a FixLocation method to assign a new location as required.
1. Object oriented programming is a programming model organized around objects rather than actions and data rather than logic. The basic concepts are objects, classes, encapsulation, abstraction, data hiding, polymorphism, and inheritance.
2. An object has an identity, properties, and behavior. A class is a blueprint that defines common attributes and behaviors of objects. Classes allow for data and functions to be bundled together.
3. The key features of OOP are encapsulation, which combines data and functions into a class; abstraction, which hides complex details and shows only essential information; inheritance, which forms new classes from existing classes; and polymorphism, which allows the same operation to be performed in different ways.
Python modules allow for code reusability and organization. There are three main components of a Python program: libraries/packages, modules, and functions/sub-modules. Modules can be imported using import, from, or from * statements. Namespaces and name resolution determine how names are looked up and associated with objects. Packages are collections of related modules and use an __init__.py file to be recognized as packages by Python.
Functions allow programmers to organize and reuse code. There are three types of functions: built-in functions, modules, and user-defined functions. User-defined functions are created using the def keyword and can take parameters and arguments. Functions can return values and have different scopes depending on if a variable is local or global. Recursion is when a function calls itself, and is useful for breaking down complex problems into simpler sub-problems. Common recursive functions calculate factorials, Fibonacci numbers, and generate the Pascal's triangle.
MongoDB is a document-oriented NoSQL database that uses JSON-like documents with optional schemas. It provides high performance, high availability, and easy scalability. MongoDB is also called "humongous" because it is designed to store and handle large volumes of data. Some key advantages of MongoDB include its ability to handle large, unstructured data sets and provide agile development with quick code iterations.
This document discusses tuples in Python. It begins by defining a tuple as a sequence of values that can be of any type and are indexed by integers. Tuples are immutable, like lists but values cannot be changed. Various tuple functions are described such as creating empty tuples, accessing tuple elements using indexes and loops, checking if an item exists, getting the length, and removing a tuple. Built-in tuple methods like count() and index() are explained. The key differences between tuples, lists, and dictionaries are outlined. Finally, some example programs demonstrating tuple operations are provided.
The document discusses lists in Python. It begins by defining lists as mutable sequences that can contain elements of any data type. It describes how to create, access, manipulate, slice, traverse and delete elements from lists. It also explains various list methods such as append(), pop(), sort(), reverse() etc. and provides examples of their use. The document concludes by giving some programs on lists including finding the sum and maximum of a list, checking if a list is empty, cloning lists, checking for common members between lists and generating lists of square numbers.
Strings in Python are arrays of bytes representing Unicode characters. Individual characters in a string can be accessed using indexes and slices. Strings are immutable, so their elements cannot be changed once created.
Various methods are available for string manipulation in Python. These include methods for accessing characters by index or slice, checking substrings, converting case, padding/stripping strings, and more. Character methods like ord() and chr() allow getting ASCII values and characters.
This document discusses exception handling in Python. It defines errors and exceptions, and describes the different types of errors like syntax errors, semantic errors, type errors, runtime errors, and logical errors. It explains how exceptions occur during program execution. The try and except blocks are described for handling exceptions, with examples given. The raise statement is explained for raising user-defined exceptions. Common built-in exceptions in Python like IOError, ImportError, ValueError and KeyboardInterrupt are also listed.
This document discusses Python data types and handling data in Python. It covers the different types of numbers in Python including integers, floating point numbers, and complex numbers. It also discusses Boolean, string, and tuple data types. Methods for accessing and slicing strings are provided along with examples. Mutable and immutable objects are defined, with lists and tuples given as examples. Operator precedence in Python is also discussed.
This document provides an introduction to Python fundamentals, including:
1. The Python character set includes letters, digits, symbols, and whitespace. Individual elements are called tokens or lexical units.
2. Keywords, identifiers, literals, operators, and punctuators are the main types of tokens. Identifiers follow specific naming conventions. Literals include strings, numbers, Booleans, None, and collections.
3. Strings can be single or multi-line with escape sequences. Numbers can be integers, floats, or complex. True, False, and None are Boolean and special literals.
Python is a high-level, interpreted programming language created by Guido van Rossum in 1991. It has gained popularity due to its clear syntax and readability. Companies prefer Python because it is easy to use, free and open-source, and has a large standard library. It can be used for a variety of tasks including web development, data analysis, and scientific computing.
Computational thinking (CT) is a problem-solving process that involves decomposition, pattern recognition, abstraction, and algorithm design. CT can be used to solve problems across many disciplines. The key principles of CT are: 1) Decomposition, which is breaking down complex problems into smaller parts; 2) Pattern recognition, which is observing patterns in data; 3) Abstraction, which identifies general principles; and 4) Algorithm design, which develops step-by-step instructions. CT is a concept that focuses on problem-solving techniques, while computer science is the application of those techniques through programming. CT can be applied to solve problems in any field, while computer science specifically implements computational solutions.
This document provides information about algorithms and flowcharts. It begins with defining an algorithm as a sequence of steps to solve a problem and discusses properties like finiteness, definiteness, inputs, outputs, and effectiveness. Examples of algorithms are provided for tasks like making noodles and checking voter eligibility. Flowcharts are introduced as a way to visually represent algorithms using standard symbols like rectangles, diamonds, and arrows. Advantages of algorithms and flowcharts are that they improve problem solving, communication, and programming. The document concludes with flowchart examples and a short class test.
This document provides an introduction to Boolean algebra, which was developed by English mathematician George Boole in the 1800s. It describes Boolean algebra as an algebra of logic or an algebra of two values (true or false). The key concepts covered include:
- The basic logical operators of AND, OR, and NOT
- How these operators are represented using 1s and 0s in digital circuits
- Truth tables for the operators
- Logic gates (AND, OR, NOT) that perform Boolean operations in circuits
- Practical applications of logic gates in electronic devices
- Other logic gates like NAND, NOR, XOR, and XNOR
- Basic theorems of Boolean algebra including De Morgan's theorems
The document discusses different number systems including binary, octal, decimal, and hexadecimal. It provides details on each system such as the base, digits used, applications, and how to convert between them. Binary uses only 0s and 1s and is the most fundamental system used in computing. Octal uses digits 0-7, with applications including older computer architectures. Decimal uses 0-9 and is the most common. Hexadecimal uses 0-9 and A-F, with each digit representing 4 bits, making it convenient for displaying colors and memory addresses.
Open Source and AI - ByWater Closing Keynote Presentation.pdfJessica Zairo
ByWater Solutions, a leader in open-source library software, will discuss the future of open-source AI Models and Retrieval-Augmented Generation (RAGs). Discover how these cutting-edge technologies can transform information access and management in special libraries. Dive into the open-source world, where transparency and collaboration drive innovation, and learn how these can enhance the precision and efficiency of information retrieval.
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Lecture Notes Unit4 Chapter13 users , roles and privilegesMurugan146644
Description:
Welcome to the comprehensive guide on Relational Database Management System (RDBMS) concepts, tailored for final year B.Sc. Computer Science students affiliated with Alagappa University. This document covers fundamental principles and advanced topics in RDBMS, offering a structured approach to understanding databases in the context of modern computing. PDF content is prepared from the text book Learn Oracle 8I by JOSE A RAMALHO.
Key Topics Covered:
Main Topic : USERS, Roles and Privileges
In Oracle databases, users are individuals or applications that interact with the database. Each user is assigned specific roles, which are collections of privileges that define their access levels and capabilities. Privileges are permissions granted to users or roles, allowing actions like creating tables, executing procedures, or querying data. Properly managing users, roles, and privileges is essential for maintaining security and ensuring that users have appropriate access to database resources, thus supporting effective data management and integrity within the Oracle environment.
Sub-Topic :
Definition of User, User Creation Commands, Grant Command, Deleting a user, Privileges, System privileges and object privileges, Grant Object Privileges, Viewing a users, Revoke Object Privileges, Creation of Role, Granting privileges and roles to role, View the roles of a user , Deleting a role
Target Audience:
Final year B.Sc. Computer Science students at Alagappa University seeking a solid foundation in RDBMS principles for academic and practical applications.
URL for previous slides
chapter 8,9 and 10 : https://www.slideshare.net/slideshow/lecture_notes_unit4_chapter_8_9_10_rdbms-for-the-students-affiliated-by-alagappa-university/270123800
Chapter 11 Sequence: https://www.slideshare.net/slideshow/sequnces-lecture_notes_unit4_chapter11_sequence/270134792
Chapter 12 View : https://www.slideshare.net/slideshow/rdbms-lecture-notes-unit4-chapter12-view/270199683
About the Author:
Dr. S. Murugan is Associate Professor at Alagappa Government Arts College, Karaikudi. With 23 years of teaching experience in the field of Computer Science, Dr. S. Murugan has a passion for simplifying complex concepts in database management.
Disclaimer:
This document is intended for educational purposes only. The content presented here reflects the author’s understanding in the field of RDBMS as of 2024.
PRESS RELEASE - UNIVERSITY OF GHANA, JULY 16, 2024.pdfnservice241
The University of Ghana has launched a new vision and strategic plan, which will focus on transforming lives and societies through unparalleled scholarship, innovation, and result-oriented discoveries.
How To Sell Hamster Kombat Coin In Pre-marketSikandar Ali
How To Sell Hamster Kombat Coin In Pre Market
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How To Sell Hamster Kombat Coin In Pre Market
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Odoo 17 Events - Attendees List ScanningCeline George
Use the attendee list QR codes to register attendees quickly. Each attendee will have a QR code, which we can easily scan to register for an event. You will get the attendee list from the “Attendees” menu under “Reporting” menu.
Demonstration module in Odoo 17 - Odoo 17 SlidesCeline George
In Odoo, a module represents a unit of functionality that can be added to the Odoo system to extend its features or customize its behavior. Each module typically consists of various components, such as models, views, controllers, security rules, data files, and more. Lets dive into the structure of a module in Odoo 17
FIRST AID PRESENTATION ON INDUSTRIAL SAFETY by dr lal.ppt
Chapter 1 computer fundamentals
1. CHAPTER – 01
COMPUTER FUNDAMENTALS
Unit 1
Computer Systems and Organisation
(CSO)
XI
Computer Science (083)
Board : CBSE
2. Unit I
Computer Systems and Organisation (CSO)
(10 Theory + 02 Practical)
Department of Computer Science, Sainik School Amaravathinagar)
Cell :9431453730
Email : praveenkumarjigajinni@gmail.com
Praveen M Jigajinni
DCSc & Engg,PGDCA,ADCA,MSc(IT),MCA,Mtech, MPhil (CS)
Prepared by
Courtesy CBSE
3. What you are going to study in this Unit II?
Basic computer organisation: description of a
computer system and mobile
system, CPU, memory, hard disk, I/O, battery.
Types of software: application, System, utility.
Memory Units: bit, byte, MB, GB, TB, and PB.
Boolean logic: OR, AND, NAND, NOR, XOR, NOT,
truth tables, De Morgan’s laws
Information representation: numbers in base 2,
8, 16, binary addition
4. What you are going to study in this Unit II?
Strings: ASCII, UTF8, UTF32, ISCII (Indian script
code), Unicode
Basic concepts of Flowchart
Concept of Compiler & Interpreter
Running a program: Notion of an operating
system, how an operating system
runs a program, idea of loading, operating system
as a resource manager.
Concept of cloud computing, cloud
(public/private), introduction to parallel
computing
5. Courtesy CBSE
Computer Fundamentals
After studying this session students will be able to:
Learn about various generations of computer
Understand the basic operation of a computer
Study the functional components and their interconnections
Understand the concept of booting
Learn about classification of computers
6. What is Computer?
A computer is a device that can
be instructed to carry out sequences
of arithmetic or logical operations
automatically. Modern computers have
the ability to follow generalized sets of
operations, called programs. These
programs enable computers to perform an
extremely wide range of tasks.
Source Wikipedia
7. What is Data?
Data. Data in a computer terminology mean
raw facts and figures.
For ex-mohan,1977 etc.
What is Information?
means what we get after processing.
8. Data Vs. Information?
you should understand that what goes in
the computers is data and what comes out
of them is information.
This process of turning data into
information is also known as information
processing cycle.
10. BASIC COMPUTER ORGANISATION
Computer organisation refers to logical
structure of a computer how its
components are connected to one another
ALU Registers
Control Memory
Memory Memory Memory
12. Input Unit
The input unit consists of input
devices that are attached to the
computer.
These devices take input and convert
it into binary language that the
computer understands.
Some of the common input devices
are keyboard, mouse, joystick,
scanner etc.
14. Central Processing Unit(CPU)
Once the information is entered
into the computer by the input
device, the processor processes it.
The CPU is called the brain of the
computer because it is the control
centre of the computer.
As the CPU is located on a small
chip, it is also called the
Microprocessor.
16. Arithmetic Logic Unit (ALU)
The ALU, as its name suggests
performs mathematical calculations
and takes logical decisions.
Arithmetic calculations include
addition, subtraction, multiplication
and division.
Logical decisions involve comparison
of two data items to see which
one is larger or smaller or equal.
17. Control Unit (CU)
The Control unit coordinates and
controls the data flow in and out
of CPU and also controls all the
operations of ALU, memory registers
and also input/output units.
It is also responsible for carrying out
all the instructions stored in the
program.
18. Memory Registers
A register is a temporary unit of
memory in the CPU.
These receive data/information and
then this data/information is held in
them as per the requirement.
19. Output Unit
The output unit consists of output
devices that are attached with the
computer.
It converts the binary data coming
from CPU to human understandable
from. The
common output devices are monitor,
printer, plotter etc.
21. Classification of Computers
The computers can be classified
based on the technology being used as:
Digital Computers
Analog Computers &
Hybrid Computers
22. Digital Computers
These computers are capable of
processing information in discrete
form.
In digital technology data which can
be in the form of letters, symbols or
numbers is represented in binary form
i.e. 0s and 1s.
23. Digital Computers
Binary digits are easily expressed in a
digital computer by the presence (1) or
absence (0) of current or voltage.
It computes by counting and adding
operations.
24. Digital Computers
The digital computers are used in
industrial, business and scientific
applications.
They are quite suitable for large
volume data processing.
26. Analog Computers
An Analog computer works on
continuously changeable aspects of
physical phenomenon such as fluid
pressure, mechanical motion and
electrical quantities.
These computers measure changes in
continuous physical quantities say
current and voltage.
27. Analog Computers
These computers are used to process
data generated by ongoing physical
processes.
A thermometer is an example of an
analog computer since it measures the
change in mercury level continuously.
28. Analog Computers
Although the accuracy of an analog
computer is less as compared to digital
computers, yet it is used to process
data generated by changing physical
quantities especially when the
response to change is fast.
29. Analog Computers
Most present day Analog computers
are well suited to simulating systems. A
simulator helps to conduct
experiments repeatedly in real time
environment.
Some of the common examples are
simulations in aircrafts, nuclear power
plants, hydraulic and electronic
networks.
32. Analog Computers
Boeing B-29 Superfortress Central
Fire Control System
Deltar
Kerrison Predictor
Leonardo Torres y Quevedo's
Analogue Calculating Machines based
on "fusee sans fin"
Librascope, aircraft weight and
balance computer
34. Analog Computers
DISADVANTAGES:
Analog computers can have a very
wide range of complexity.
Slide rules and monographs are the
simplest, while naval gun fire control
computers and large hybrid
digital/analog computers were among
the most complicated.
36. Hybrid Computers
These use both analog and digital
technology.
It has the speed of analog computer
and the accuracy of a digital computer.
It may accept digital or analog
signals but an extensive conversion of
data from digital to analog and analog
to digital has to be done.
37. Hybrid Computers
Generally the analog components
provide efficient processing of
differential equations while the digital
part deals with logical operations of
the system.
Hence benefits of both analog and
digital computing are readily available.
38. Hybrid Computers
Hybrid Computers are used as a cost
effective means for complex
simulations.
Examples: Computer used in
hospitals to measure the heartbeat of
the patient. Devices used in petrol
pump.
39. Hybrid Computers
A hybrid computer exhibits features of
both analog computers and digital
computers. It applies the real-time
speed of the analog computer and the
accuracy of the digital computer to the
solution of problems that are beyond
the capabilities of either. An example
was the HYDAC 2400, a hybrid computer
released by EAI in 1963.
42. Classification of Digital Computers
The digital computers are classified
according to their computing
capabilities.
43. Classification of Digital Computers
The various types of digital
computers are :
Micro Computers
Mini Computers
Main Frames
Super Computers
44. Micro Computers
These are also known as Personal
Computers. These type of digital
computer uses a microprocessor (a
CPU on a single chip) and include both
desktops and laptops.
45. Micro Computers
These computers can work on small
volume of data, are very versatile and
can handle variety of applications.
These computers are being used as
work stations, CAD, multimedia and
advertising applications.
46. Micro Computers
Small portable computers such as
PDAs (Personal Digital Assistants) and
tablets with wireless computing
technology are increasingly becoming
popular.
51. Mini Computers
These computers can support
multiple users working simultaneously
on the same machine.
These are mainly used in an
organization where computers
installed in various departments are
interconnected. These computers are
useful for small business organizations.
52. Mini Computers
Examples
Control Data's CDC 160A and CDC
1700.
DEC PDP and VAX series.
Data General Nova.
Hewlett-Packard HP 3000 series, HP
2100 series, HP1000 series.
55. Mainframe Computers
These computers are large and very
powerful computers with very high
memory capacity.
These can process huge databases
such as census at extremely fast rate.
They are suitable for big organizations,
banks, industries etc. and can support
hundreds of users simultaneously on
the network.
56. Mainframe Computers
History of IBM mainframes, 1952–
presentMarket name700/7000 series
System/360
System/370
IBM 308X
IBM 3090
System/390
zSeries 900, 800, 990, and 890
System z9
System z10
57. Mainframe Computers
History of IBM mainframes, 1952–
present Market name 700/7000 series
zEnterprise System (z196, zEC12, z13,
z14)
ArchitectureSystem/360
System/370
S/370-XA
ESA/370
ESA/390
z/Architecture
58. Super Computers
These are fastest and very expensive
computers.
They can execute billions of
instructions per second.
59. Super Computers
These are multiprocessor, parallel
systems suitable for specialized
complex scientific applications
involving huge amounts of
mathematical applications such as
weather forecasting.
60. Super Computers
The main difference between a
supercomputer and a mainframe is
that a supercomputer executes fewer
programs as fast as possible whereas a
mainframe executes many programs
concurrently.
61. Super Computers
Year Supercomputer Location
2016 Sunway TaihuLight Wuxi, China
2013 NUDT Tianhe-2 Guangzhou, China
2012 Cray Titan Oak Ridge, U.S.
2012 IBM Sequoia Livermore, U.S.
2011 Fujitsu K computer Kobe, Japan
2010 Tianhe-IA Tianjin, China
2009 Cray Jaguar Oak Ridge, U.S.
2008 IBM Roadrunner Los Alamos, U.S.
62. Hardware and Software
A computer consists of both hardware and
software and both are equally important for
the working of the computer system.
The electronic components of a computer
system that we can see and touch are called
hardware.
Software is a general term used for
computer programs that control the
operations of the computer.
64. Hardware and Software
A program is a sequence of instructions
that perform a particular task. A set of
programs form a software.
It is the software which gives hardware its
capability.
Hardware is of no use without software
and software cannot be used without
hardware.
65. Types of Software
Software can be broadly are
categorized as:
System Software
Application Software
Utility Software
67. System Software
System Software is the software that
is directly related to coordinating
computer operations and performs
tasks associated with controlling and
utilizing computer hardware. These
programs assist in running application
programs and are designed to control
the operation of a computer system.
68. System Software
System software directs the computer
what to do, when to do and how to
do. System software can be further
categorized into:-
Operating System
Language Translators
69. Operating System
An Operating system is the most
important system software.
It is a set of programs that control
and supervise the hardware of a
computer and also provide services to
application software, programmers
and users. Ex :-
70. Operating System
Some of the popular operating
systems used in personal computers
are DOS, Windows, Unix, Linux,
Solaris, etc.
76. An application software is bought by
the user to perform specific
applications or tasks.
Say for example making a document
or making a presentation or handling
inventory or managing the employee
database.
Application Software
77. An application software can be of
two types:
General Purpose Application
Software &
Customized Application software.
Application Software
78. Some of the application software is
made for the common users for day to
day applications and uses.
These are also referred as Office
Tools.
The users may use them in the
manner they want.
Application Software - General Purpose
Application Software
79. Some of the popular types of general
purpose application software are:
Word Processor
Presentation Tools
Spreadsheet Packages
Database Management System
Application Software - General Purpose
Application Software
80. Customized Software is one which is
tailor made as per the user’s
requirement. Such type of software is
customer specific.
It is made keeping in mind the
individual needs of the user and so are
also referred as Domain Specific Tools
Application Software - Customized
Software
81. Examples:
Inventory Management System &
Purchasing System
School Management System
Payroll System
Financial Accounting
Hotel Management
Reservation System
Weather Forecasting system
Application Software - Customized
Software
83. Memory is one of the most
important components of a
computer system as it stores data
and instructions.
Every memory chip contains
thousands of memory locations. In
the computer, the data is stored in
the form of bits and bytes.
Memory
84. A bit is the smallest storage unit of
memory. A nibble is a collection of 4
bits. Eight bits combined together to
form a single byte, which in turn
represents a single character
Memory
88. Types of Memories
The computer memories can be
divided into following categories:
Primary Memory
Cache Memory
Secondary memory
89. Primary Memory
Primary memory or main
memory is a Metal Oxide
Semiconductor (MOS) memory
used for storing program and
data during the execution of the
program. It is directly accessible
to CPU.
91. Random Access Memory (RAM)
the memory can be accessed from
any desired location randomly.
The instructions and data that we
input into the computer are stored in
the RAM of the Computer.
It is a read/write memory, so data
can be both read from and written to
the RAM.
92. Random Access Memory (RAM)
It is a volatile memory and loses its
contents when the power is switched
off or interrupted.
Nowadays RAMs are available in
gigabytes. The normal memory
access time of a RAM is 20-80 ns.
93. Random Access Memory (RAM)
RAM can be broadly classified into
two categories:
Dynamic RAM (DRAM) and
Static RAM (SRAM).
94. Dynamic RAM (DRAM)
It consists of a transistor and a
capacitor that stores electric charge.
The DRAMs are physically smaller,
cheaper and slower memories. They
are slower because the data stored in
them needs to continuously
refreshed and this consumes lot of
processor time.
95. Each refresh operation takes
several CPU cycles to complete. This
is because a capacitor tends to loose
charge over a period of time which
needs to be refreshed again and
again.
Dynamic RAM (DRAM)
96. This type of RAM is large in physical
size but is an expensive and faster
memory.
It is faster because it is made up of
flip flops to store data and these flip
flops do not require any refreshing.
Static RAM
97. Static RAM is also volatile and is
easier to use as compared to dynamic
RAM. These are used in specialized
applications.
Static RAM
99. Its non volatile memory, ie, the
information stored in it, is not lost
even if the power supply goes off. It’s
used for the permanent storage of
information. It also posses random
access property. Information can not
be written into a ROM by the
users/programmers. In other words
the contents of ROMs are decided by
the manufactures.
ROM
100. (i) PROM : It’s programmable ROM. Its
contents are decided by the user. The
user can store permanent programs,
data etc in a PROM. The data is fed
into it using a PROM programs.
Types of ROM
101. (ii) EPROM : An EPROM is an erasable
PROM. The stored data in EPROM’s
can be erased by exposing it to UV
light for about 20 min. It’s not easy to
erase it because the EPROM IC has to
be removed from the computer and
exposed to UV light. The entire data is
erased and not selected portions by
the user. EPROM’s are cheap and
reliable.
Types of ROM
102. (iii) EEPROM (Electrically Erasable
PROM) : The chip can be erased &
reprogrammed on the board easily
byte by byte. It can be erased with in
a few milliseconds. There is a limit on
the number of times the EEPROM’s
can be reprogrammed, i.e.; usually
around 10,000 times.
Types of ROM
103. Its an electrically erasable &
programmable permanent type
memory. It uses one transistor
memory all resulting in high packing
density, low power consumption,
lower cost & higher reliability. Its used
in all power, digital cameras, MP3
players etc.
Flash Memory
104. Cache memory is a special high
speed memory made up of high speed
static RAMs.
It is used to hold frequently
accessed data and instructions.
We know that the processing speed
of CPU is much more than the main
memory access time of the computer.
Cache Memory
105. This means the CPU has to wait for
a substantial amount of time.
Alternatively we have the cache
memory which is a small, expensive
but fast memory that is placed
between the CPU and the main
memory.
Cache Memory
106. Whenever some data is required,
the CPU first looks into cache.
If data is found, we call it a cache hit
and the information is transferred to
the CPU.
In case of a miss, the main memory
is accessed.
Cache Memory
107. There are two types of cache
memory:
Cache Memory
L1 cache: It is small and is built inside
the CPU. It is fast as compared to L2
cache
L2 cache: It is large but slower and is
mounted on the motherboard
109. Secondary Memory
The major limitation of primary
memory is that it has limited storage
capacity and is volatile.
To overcome this limitation we have
secondary memory storage devices.
This type of memory is also called
external memory. For example Floppy
disk, hard disk, USB drives, CD/DVDs
111. Hard disk
A hard disk consists of one or more
circular disks called platters which are
mounted on a common spindle. Each
surface of a platter is coated with a
magnetic material. Both surfaces of
each disk are capable of storing data
except the top and bottom disk where
only the inner surface is used.
112. Hard disk
The information is recorded on the
surface of the rotating disk by magnetic
read/write heads. These heads are
joined to a common arm known as
access arm. This arm moves over the
surface of the rotating disk as shown in
the figure (next slide)
114. Hard disk
Information is recorded on each of
these disks in the form of concentric
circles called tracks which are further
divided into sectors. Hard drives
however, are not very portable and are
primarily used internally in a computer
system. But external hard disks are also
available as a substitute for portable
storage. Today the hard disks have the
storage capacity of several gigabytes to
terabytes.
116. OPTICAL DISKS
An optical disk is primarily used as a portable
and secondary storage device. It can store more data
than the previous generation of magnetic storage
media, and has a relatively longer lifespan. Compact
disks (CD), digital versatile/video disks (DVD) and Blu-
ray disks are currently the most commonly used
forms of optical disks. These disks are generally used
to:
Distribute software to customers.
Store large amounts of data such as music, images
and videos.
Transfer data to different computers or devices.
Back up data from a local machine.
118. Batteries
A battery is a device consisting of one or
more electrochemical cells with external
connections provided to power electrical devices
such as flashlights, smartphones, and electric
cars. When a battery is supplying electric power,
its positive terminal is the cathode and its
negative terminal is the anode.
What is battery? Courtesy: Wikipedia
120. Computer Batteries
There are three computer batteries types used
with computers
1. Backup Battery (CMOS)
2. Bridge Battery
3. Main Battery
121. The Complementary Metal-Oxide
Semiconductor chip usually abbreviated as
CMOS chip is powered by the CMOS battery.
The CMOS battery, unlike the other battery
types is present in each and every computer.
They are small in size (coin-sized) and generally
the lifetime of the motherboard (say 10 years).
The actual function of this CMOS battery is to
power the CMOS chip which stores the clock
settings and hardware settings.
1. Backup Battery (CMOS)
122. The Bridge battery is not part of every
computer. It is only limited to the laptops and
that too not in all of them. So as the name
suggests, it is an auxiliary power source which
keeps laptop alive when the main battery is
replaced. It is not as big or powerful as main
battery but can take care of the power
requirements in that short span of time. Most
people know it by the name, backup battery.
2. Bridge Battery
123. The Main battery is the ultimate alternative
source that makes laptops portable. It has the
capacity to store charge and supply it to the
components whenever required. These are made of
several distinct battery technologies and here are a
few popular technologies among the lot:
1. Nickel Cadmium (NiCd)
2. Lithium Ion (Li-ion)
3. Main Battery
124. 3. Nickel Metal Hydride (NiMH)
4. Lithium Ion Polymer (Li-ion polymer)
Most of the present laptops are equipped
with Lithium ion and Lithium Polymer batteries.
3. Main Battery
126. CLASS TEST
Time: 40 Min Max Marks: 20
1. Write a types of softwares 05
2. Write a note on battery 05
3. Write a note on Hard disk 05
4. Explain the types of memories 05