Question

what is computer and give example

Answer 1

A computer is an electronic device that accepts data, processes it, stores, and then produces an output. For example, you can write a letter in a word processor, edit it anytime, spell check, print copies, and send it to someone across the world in a matter of seconds. All of these activities would have taken someone days, if not months, to do before. Also, these examples are just a small fraction of what computers can do.
Hope it's helpful.