Basic Concept

Subject: Computer Basics

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Lesson Info

  • Notes 14
  • Videos 28
  • Exercises 70
  • Practice Test 82
  • Skill Level Medium


This lesson covers following topics:
  • Introduction and history of computers
  • Simple model of computer and working parts of the computer
  • CPU, Memory and input/output devices
  • Computer languages and their hierarchy
  • Machine language, assembly language and high level language
  • Comparison of high level and low level languages especially C, C++, Pascal.


What is a computer?

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. This note describes what a computer is and its simple model. Learn More

Components of a basic computer

A basic computer consists of 4 components which are input device, output device , CPU and Memory. This note provides an information about components of basic computer. Learn More

How does a computer work?

Computer architecture is the conceptual design and fundamental operational structure of a computer system. By reading this note you can know about how does a computer work. Learn More

Features of a computer

The word computer is derived from Latin word 'computer', which means ' calculate'. Computers are used in wide verity of fields like home, school, colleges, offices, industries, banks, retail, stores, researches and development. This note explains about the various features of the computer. Learn More

Some Basic Terms Used In Computer Science

The physical parts of the computer which can be seen and touched is called hardware. This note explains some very basic terms used in computer science such as hardware, RAM, ROM, IC, Firmware, etc. Learn More

History of Computers

The history of computer can be traced to mechanical age i.e there were mechanical devices for the calculation purpose. This note explains about the evolution of computer through years. Learn More

Input Devices

An input device for a computer allows you to enter information. This note provides an information about input devices. Learn More

Output Devices

Output devices are the devices which enable our senses to persive the result of computer processing to see the result and display it. This note provides us an information about output devices. Learn More

Computer Memory

Based on their read write capability and their storage capability, computer memory can be classified into primary and secondary memory. This note explains about different types of computer memory. Learn More

Auxiliary Memory

Auxiliary memory is used as permanent storage of data. The data and instructions are supplied to primary memory from auxiliary memory. This note provides an information about auxiliary memory. Learn More

5 Generations of computer

Each of the five generations of computers is characterized by a major technological development that fundamentally changed the way computers operate, resulting in increasingly smaller, cheaper, more powerful and more efficient and reliable computing devices. This note explains about the five generations of computer. Learn More

Classification of Computer

Computer System can be broadly classified into four groups, namely: Mainframe Computer, Minicomputer, Microcomputer and Supercomputer. This note provides an information about classification of computers. Learn More

Computer language

The language that is used to write a computer program is called computer language. They are broadly classified into two types: Low Level Language and High Level Language. This note explains about different types of computer language. Learn More

Examples of computer languages

This notes list some of the popular computer languages such as C, C++ and Pascal. It also lists the differences between C and C++. Learn More

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