CPU
Today, often mistaken for the entire computer, case and all. CPU is NOT the entire computer but is the Central Processing Unit. It is the brain of computer executing tasks and telling the other components what to do. Mainly manufactured by AMD and Intel. the speed of the processor is measured in GHZ or MHZ (Gigahertz & Megahertz) for now anyway.
I recently upgraded my computers CPU from and AMD 2500+ (~1.8ghz)to a pentium IV 3.0 GHZ processor but I didn't notice much of a diffrence until I got some more RAM.
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