Central Processing Unit
The most powerful microprocessor chip in your computer is the CPU. For example, the Intel Pentium and the Motorola 68040 chips handle the central management functions of a high-powered PC or Mac, respectively. Sometimes, the term CPU is used to describe the whole box, including the chip, the motherboard, the expansion cards, the disk drives, the power supply, and so on. Both uses are widespread, but only the first is really accurate.
NetLingo Classification: Net Hardware