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 There are four basic functions of a Computer. They are:

1. INPUT- you input data i.e. you provide data; set of instuctions. You input data through input devices which are keyboard, mouse, scanner,etc

2. PROCESSING- the computer processes it i.e. it manipulates the data which is done by the C.P.U

3. OUTPUT- After processing the data the computer displays the result , it gives an output. Output devices are the monitor, in the case of visual output. speakers, in the case of audio output, printers, etc

4. STORAGE- You can save your data for future use in the CPU itself which is stored in the computer's ROM. There are several other storage devices also like removeable disks , CDs, etc