A system program which helps the execution of user programs is known as

Which of the following is non-impact printer?

A disk's content that is recorded at the time of manufacture and cannot be changed or erased by user is -

What is backup?

Which of the following are often used to ensure that data has been accurately input to the computer?

One million bytes of information is abbreviated as

A general purpose single-user microcomputer designed to be operated by one person at a time is

The invention of the slide rule is attributed to