A computer is an electronic machine that accepts meaningless raw data as input, processes it and bring out meaningful information as output.

A computer system comprises of three main parts which are;

1. Hardware - These are the physical part of the computer we can touch and feel example; mouse, keyboard, monitor, system unit, speakers etc.
2. Software - These are the parts we can only see but cannot touch  or feel examples, system software, application software etc.
3. Humanware- These are the users who use the computer examples; computer specialist, doctors, secretaries etc.

Note: in our next lesson, we will be discussing about the main different parts of the computer in details. feel free to add your comments.