Question

How computer is a useful device?

Answer 1

Computer is useful due to:

■ Computer reduces the cost of all data related operations including, input, output, storage, processing, and transmission.

■ Computer greatly improves the speed of data input, output, processing, and transmission.

I hope this helps.

Answer 2

Now a day computers are prove to be very important device as:
☆We can do video conferencing to the people who are very far from us .
☆We can do work at very low cost by using computer . for ex -printing ,making presentations,sending e-mails, etc.
☆It increases the speed of our work .
☆It is also very useful at the places like railway stations, colleges,airport,etc.


HOPE IT HELPS YOU....