Organization of Computing System

1- Computer Hardware (H/W)
2- Computer Software (S/W)
3- Operating System (O.S)
4- Computer Networks (N/W)
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1- Computer Hardware:- All physical Components of Computer are called its hardware. We can say that all physical Devices are computer hardware. Keyboard, Mouse, Printer, Scanner, Hard Disk, CD-ROM etc.
There are three main units of Computer Hardware.
i- Input Unit
ii- Processing Unit
iii- Output Unit
i- Input Unit: The Devices that are used to give data and/or Instruction to computer system are related to Input Unit. Like Keyboard, Mouse etc.
ii- Processing Unit: This unit is responsible for all data processing in computer system. The device for this purpose is called CPU (Central Processing Unit) or Micro Processor.
iii- Output Unit: The devices that are used to show results of processed data, are related to output Unit. Like Monitor, Printer etc.
We will see these topics in detail latter on.