A computer is an electronic device that can be programmed to carry out a set of instructions, processing data and performing calculations at high speeds. It consists of interconnected components that work together to execute tasks under the control of software.

What does Computer mean?

A computer is an electronic device that is capable of carrying out computations and instructions in an automated manner. It consists of Hardware components, such AS the central processing unit (CPU), memory, storage devices, input devices, and output devices, which work together to perform various operations. The CPU is the central processing unit of the computer, which executes instructions and performs calculations. Memory stores data and instructions, while storage devices such as hard drives and solid-state drives store data permanently. Input devices allow users to interact with the computer, such as keyboards and mice, while output devices display or print the results of computations.

The term “computer” is derived from the Latin word “computare,” meaning “to calculate.” Computers have evolved from simple mechanical devices to the sophisticated electronic devices we use today. The earliest known computers were mechanical calculators, such as the abacus, which was invented in ancient China. In the 19th century, mechanical calculators were developed to perform more complex calculations, such as the Analytical Engine, invented by Charles Babbage.


Computers are used in a wide range of applications, including:

  • Scientific Research: Computers are used to perform complex scientific calculations and simulations.
  • Business and industry: Computers are used to manage data, process transactions, and automate tasks.
  • Education: Computers are used to deliver educational content, provide access to online resources, and facilitate communication between students and teachers.
  • Entertainment: Computers are used to play games, watch movies, and listen to music.
  • Personal productivity: Computers are used to write documents, create presentations, manage finances, and communicate with others.

Computers are Integrated into almost every aspect of our lives. They are essential for communication, education, business, and entertainment.


The history of computers can be divided into several key periods:

  • Mechanical calculators (17th-19th centuries): The earliest computers were mechanical calculators, such as the abacus and the Analytical Engine.
  • Electromechanical computers (early 20th century): Electromechanical computers, such as the Harvard Mark I, used electrical and mechanical components to perform calculations.
  • Electronic computers (mid-20th century): Electronic computers, such as the ENIAC, used electronic components to perform calculations.
  • Integrated circuit computers (late 20th century): Integrated circuit computers, such as the IBM System/360, used integrated circuits to perform calculations.
  • Microprocessor computers (late 20th century): Microprocessor computers, such as the Apple II, used microprocessors to perform calculations.
  • Personal computers (late 20th century): Personal computers, such as the IBM PC, were designed for individual users.
  • Mobile computers (early 21st century): Mobile computers, such as smartphones and tablets, are designed for portability.