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What is a computer?

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Definition of a computer

There are many definitions of a computer. Following are some of them:

"A computer is an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program."

"A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data."

"A computer is a general purpose device that can be programmed to carry out a set of arithmetic or logical operations automatically."

"A computer is a device that takes input such as numbers, text, sound, image, animations, video, etc., and converts it, presenting the changed input (processed input) as output."

Simple model of a computer


  • The data consists of numbers, text, sound, images, animations, and video.
  • The process converts numbers, text, sound, images, animations, and video (data) into usable data, which is called information.
  • The information consists of numbers, text, sound, images, animations, and video that has been converted by the process.
  • The data is inserted using an input device.
  • The central processing unit (CPU) converts data to information.
  • The information is put on an output device.



  • A computer is a device that takes data as input, processes it and presents the result as output.
  • The data is inserted using an input device.
  • The central processing unit (CPU) converts data to information.
  • The information is put on an output device.
  • A computer is a device that takes input such as numbers, text, sound, image, animations, video, etc., and converts it, presenting the changed input (processed input) as output.
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Very Short Questions

Computer is an electronic data processing device capable of taking an input data, processing them and displaying the processed result at a very high speed under the control of set of instruction. The features of computer are:

  • Speed
  • Accuracy
  • Versatility
  • Diligence

Since, the computer accepts raw data as input and converts into information by means of data processing, it is called information processing machine (IPM).

Data is defined as the raw facts or symbols which are collected from various sources and need to be processed.Information is defined as the desired or meaning full result obtained after processing the data.

There common ability that every computer has are:

  • To accept data and instructions.
  • To process data.
  • To give desired information.

0%
  • The data consists of numbers, text, sound, images, animations, and video.

    False
    Can't say
    Maybe true
    True
  • The process  converts numbers, text, sound, images, animations, and video (data) into usable data, which is called __________.

    data
    raw facts
    information
    animation
  • The data is inserted in computer by using:

    output device
    input device 
    connecting device
    network device
  • _______  converts data to information.

    Output devices
    Input devices
    None of the answers are correct
    Central processing unit
  • _______is a device that takes input such as numbers, text, sound, image, animations, video, etc., and converts it, presenting the changed input (processed input) as output.

    CU
    CPU
    Computer 
    ALU
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