PROC Hardware Abbreviation

Processor

This little chip is the heart of a computer. Also referred to as the "microprocessor," the processor does all the computations such as adding, subtracting, multiplying, and dividing. In PCs, the most popular microprocessor used is the Intel Pentium chip, whereas Macintosh computers use the PowerPC chip (developed by Motorola, IBM, and Apple). The speed of a computer's processor is measured in megahertz, or cycles per second. But higher megahertz doesn't always mean better performance.