Answer:
A computer is a machine / electronic device similar to the devices like Refrigerator, washing machine, etc.
Step-by-step explanation:
But the main difference is that, all the other devices avoid physical work but a computer reduces the burden of mental work like performing calculation, keeping the files safe in digital mode, do any programmed task any number of times without any tiredness, etc.
But, though a computer can perform any task, anytime, anywhere it is never ever superior to human being and it cannot rule human beings.