The simple introduction of C language CPU and register

One, the composition of the CPU

The CPU is divided into 4 major components, namely:

Register Device	Controller	Arithmetic Device	Clock
Some values can be staged to store data (equivalent to memory in the CPU)	Control register to read and write and replace operations	Auxiliary Unit, is the Coordinator	The clock is the CPU that determines the speed of the

In these four components, we programmers will use the most is the register, so the next focus on the register.

Second, register

The CPU registers of a modern computer roughly have the following types, or a table to represent

Accumulator	Flag Register	Program Counter	Base Address Register
The fastest to do the cumulative operation	Use 32-bit space to record the various states of the CPU, such as the fourth Zero of the logo bit can be used as a logic of true and false judgments, there are other bits can record overflow or some other state	Store the address of the next instruction	The starting position of the current data memory

Variable Address registers	Universal Registers	Instruction Registers	Stack Registers
The relative position of the storage memory, that is, the offset from the base address, used with the base address register, base + change = Actual memory address	In layman's parlance, what can be done, programmers use the most registers	Storage instructions for CPU internal use only, external cannot operate	The starting position of the record stack

I don't know much about them, so I just remember them.