Question

dash is a time interval when a process uses input/output device only​

Answer 1

Explanation:

An input device is something you connect to a computer that sends information into the computer. An output device is something you connect to a computer that has information sent to it.

Answer 2

Answer:

The central processing unit is the unseen part of a computer system, and users are only dimly aware of it. But users are very much aware of the input and output associated with the computer. They submit input data to the computer to get processed information, the output.