Parts of Computer Computer has become many types of parts like-MOUSE,KEY-BOARD,MONITOR etc. Data flow in computer when user gives input to computer so after giving input computer process data and after that gives output. 1- Input Unit- When user gives command to computer for processing data calls input. OR when user gives any instruction by keyboard to computer calls input unit. Types of Input devices-Keyboard,Mouse Scanner light pen,track Ball,Digital Tablet,OMR,OCR ,MICR etc. 2-CPU(Central Processing Unit) CPU is a main part of computer.CPU also call as brain of computer.when user input data in computer so CPU process the data and gives output. CPU has three parts- a)Main Memory- When user input the data in computer so before processing data stores in main memory. b) Arithmetic Logic Unit(ALU)- In this part every type of calculation(Addition, Substraction ,Multiplication,Division) by ALU. C)Control Unit- Control unit give command to computer for work
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