The duties of computer operators vary with the size of the installation, the type of equipment used, and the policies of the employer. Generally, operators control the console of either a mainframe digital computer or a group of minicomputers. Working from operating instructions prepared by programmers, users, or operations managers, computer operators set controls on the computer and on peripheral devices required to run a particular job. In certain establishments, some operators may only operate separate peripheral equipment or prepare printouts or other output for distribution to computer users. These types of computer operators generally do not run control consoles.
Computer operators load the equipment with tapes, disks, and paper as needed.
Messages indicate the individual specifications of each job being run. If an error message occurs, operators must locate and solve the problem or terminate the program. In addition, computer operators may supervise and train new employees. They also may help programmers and systems analysts test and debug new programs. In many offices, factories, and other work settings, PCs and minicomputers are connected in networks, often referred to as local area networks or multi-user systems.