Components of Computer Systems.

(Part 11, Biostatistics and Computer Application, AGB)

Components of Computer | Functional Units of a Digital Computer

by Dr. Uttam Sarkar, Department of Animal Genetics & Breeding, F/O- VAS, of WBUAFS

Components of Computer Systems


A computer system consists of hardware and software. Hardware refers to any physical, electrical, electromechanical components of the computer. For example keyboard, mouse, cabinet of computer is considered as hardware. Software refers to a program or set of instructions that is written to achieve a specified task. 

A computer system has five basic functional units which are listed below
  1. Input Unit 
  2. Output Unit 
  3. Control Unit 
  4. Memory Unit 
  5. Arithmetic Logic Unit 
Components of Computer

Note: The following pdf is the AGB note of (Unit 1) Biostatistics and Computer ApplicationPart 11 of BVSc & AH. *AGB - Animal Genetics and Breeding.

Topics of the PDF file of 'Components of Computer' : 

Introduction / Five Basic Functional Units of a Digital Computer - Input Unit, Output Unit, Control Unit, Memory Unit & Arithmetic Logic Unit / Stored Program Concept / Points to Remember.

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Computer Application