Useful Notes: Central Processing Unit
The Central Processing Unit (CPU or processor) is essentially the brain of a computer.
OverviewOverall, most central processing units contain:
- A fetcher to grab instructions or data
- A decoder that maps the instructions to the CPU's operation codes.
- An execution unit, which at the minimum is an Arithmetic and Logic Unit (ALU). Modern ones may include a floating point unit (FPU) as well.
- A memory management unit, which one of its functions is to store the results of an operation.
- Registers to hold important bits of information.