Definition of computer



A computer is a machine that performs at least three functions. It accepts input from the outside world. This
may be from a keyboard or from electronic sensors in a factory that measure physical force or light intensity,
etc. It processes the input using arithmetic and
logical operations. It delivers the results to the outside world, possibly on a video screen as text or graphics.
It may also adjust the temprature of an oven or pressure of a tank in a factory.