Department of Computer Scien

ce and Information Engineering

National Cheng Kung University, TAIWAN

HANEL

INSIDE THE COMPUTERInside CPUs

‰Registers

¾The CPU uses registers to store information temporarily

ƒValues to be processed ƒAddress of value to be fetched from memory

¾In general, the more and bigger the registers, the better the CPU

ƒRegisters can be 8-, 16-, 32-, or 64-bitƒThe disadvantage of more and bigger registers is the increased cost of such a CPU