The phrase "to operate a computer" means using and controlling a computer by following specific instructions to perform tasks and functions. Full definition
Trained clerks in taking telephone reservations and in operating computer terminals and printers to store and receive reservation data. (jobhero.com)
Trained three new employees by showing them how to operate computer systems and perform daily tasks. (jobhero.com)
And your hard skills are abilities you've learned to perform a specific job function and that can be measured, like operating a computer program or fixing a part on a car. (careerbuilder.com)