By which printer a character prints in only one stroke?

Which of following is not an input device?

What is a function of a keyboard in computer?

Which of following produces high quality output-

The work done by a computer operator is displayed in which part of computer?

Which of the following is a medium of output?

Which of the following is used to input in computer in digital form?

When was the computer mouse invented by Douglas Engelbart Stanford research Laboratory?

How many types of printers are there?

A character printer prints ........... characters per second.