Computer:
A computer is a machine that computes. To compute is simply to make calculations. Data is feed into it the computer and the data is stored, manipulated (calculated in various ways), and presented. That is all.
Examples of peripherals include:
Operation:
A computer does not need peripherals to operate, A computer with no screen, keyboard, or mouse can still be connected to over a network cable via another computer and be fully functional. The peripherals are generally there to help you access it easier .
Components:
In general a computer needs several parts (components) in order to operate. They include:
CPU:
A CPU – Central Processing Unit – is the “brain” of the compputer as is the part that does the actual calculations