A processor is one of the primary components in a computer. It is generally a Printed [wiki]IC[/wiki] which does the majority of the calculations in a computational device. Microprocessors are present in all computers regardless of age although they have gotten smaller. In the [wiki]IBM 305 RAMAC[/wiki] the processor is the large cabinet in the back of the picture (Below left)[wiki="File:305RAMAC.jpg"]200px|thumb|left|The IBM 305 RAMAC[/wiki]. Newer processors such as the one Below right are capable of doing billions of calculations more than the 305 RAMAC while being much smaller.[wiki="File:AMDOPT.jpg"]200px|thumb|right|A modern processor[/wiki]