Basic Computer Knowledge 500 + Questions and Answers

  • Father of the computer – Charles Babbage.
    Father of the modern computer – Alan Turing.
    The first computer for the home user introduced – IBM in 1981.
    Basic Architecture of Computer: John Von Neumann (1947-49).
    First Programmer: Lady Ada Lovelace (1880).
    First Electronic Computer: ENIAC (1946) – J.P. Eckert & J.W. Mauchly.

    Full form of Computer:

    * C – Commonly
    * O – Operated
    * M – Machine
    * P – Particularly
    * U – Used for
    * T – Technical
    * E-Education
    * R – Research
  • 1. The improvement of computer hardware theory is summarized by which law.?
   A.) Metcalf's law
   B.) Bill's Law
   C.) Moore's First Law
   D.) Grove's law

Answer: Option 'C'

Moore’s First Law

  • 2. The most widely used computer device is.
   A.) Solid state disks
   B.) External hard disk
   C.) Internal hard disk

Answer: Option 'C'

Internal hard disk

  • 3. _______ are software which is used to do particular task.
   A.) Operating system
   B.) Program
   D.) Software

Answer: Option 'B'


  • 4. Who is father of modern computers?
   A.) Abraham Lincoln
   B.) James Gosling
   C.) Charles Babbage
   D.) Gordon E. Moore

Answer: Option 'C'

Charles Babbage

  • Computer – An Introduction

    * A computer is a device that can receive process and store data.
    * However, all computers have several parts in common:
    * Input devices allow data and commands to the computer (Mouse, Keyboard etc.)
    * Memory for storing commands and data.
    * Central Processing Unit which controls the processing.
    * Monitor Process the information in the form of output.

    Characteristics of Computer

    * Speed
    * Accuracy
    * Storage
    * Diligence
    * Versatility
    * Automation

    Peripheral Devices

    * The peripheral device connects to a computer system to add functionality. Examples are a mouse, keyboard, monitor, printer and scanner.
    * A computer peripheral is a device that connects to a computer but is not part of the core computer architecture.
    * The core elements of a computer are the central processing unit, power supply, motherboard and the computer case that contains those three components.

    Types of Peripheral Devices

    * There are many peripheral devices, but they fall into three general categories:
    * Input devices, such as a mouse and a keyboard
    * Output devices, such as a monitor and a printer
    * Storage devices, such as a hard drive or flash drive

    Types of Operating System

    1. A real - time Operating System is a multi tasking Operating System that aims at executing real time applications.
    2. Real - time processing responds to input instantly.
    3. An Operating System which allows multiple users to access a computer system concurrently is known as multi user operating system.
    4. When the Operating System allows the execution of multiple tasks at one time, it is classified as a multi tasking Operating System.
    5. A distributed Operating System manages a group of independent computers and makes them appear to be a single computer.
    6. Embedded Operating Systems are designed to be used in embedded computer systems.
    7. Examples of embedded Operating Systems are Windows 10, UBUNTU and Mac OS X yosemite.
    8. Multi processing Operating System supports running a program on more than one CPU.
    9. Multi threading Operating System allows different parts of a single program to run concurrently.
  • 5. How many generations of computers we have?

Answer: Option 'C'