Input and output

The data and instructions that you can give to the computer are called the input......The processed result given by the computer to the user is called the output.The output may be generally on the printer or on the monitor
The cpu accept the data and instructions from the keyboard.It processes the data and gives the processed result as an output on the monito or on the printer.The actual flow of the processing mechanism takes place as follows.
Input-processing-Output
Keyboard-CPU-Monitor or printer