Computers are programmable electronic devices that accept data, execute prerecorded instructions, perform mathematical and logical operations, and output results.
Information technology (IT) staffing services provide temporary or permanent workers who troubleshoot and repair computers, operate help desks, and support voice and data networks.
Laser printers use a laser beam to produce an image on a drum that is rolled through a reservoir of toner. The beam is picked up by the charged portions of the drum to fuse the image onto paper.