Hardware- the mechanical, magnetic, electronic, and electrical devices comprising a computer system, as the CPU, disk drives, keyboard, or screen.

Software- the programs used to direct the operation of a computer, as well as documentation giving instructions on how to use them.

Users- a person who uses a computer.

Data- anything suitable for use with the computer.

                        They all work together to make the computers we use today work easy and quick. If one of those four parts are missing it is a great possibility that the whole computer wouldn’t work because they all give each other help in making a computer run smooth and efficient.