personal computer - a small digital computer based on a microprocessor and designed to be used by one person at a timedesktop computer - a personal computer small enough to fit conveniently in an individual workspace digital computer - a computer that represents information by numerical (binary) digits microprocessor - integrated circuit semiconductor chip that performs the bulk of the processing and controls the parts of a system; "a microprocessor functions as the central processing unit of a microcomputer"; "a disk drive contains a microprocessor to handle the internal functions of the drive" PC board - a removable circuit board for a personal computer; fits into a slot in the mother board |