1. The function and basic structure of the CPU
mind Mapping
The structure of modern computers
CPU function
Arithmetic unit
The basic composition of arithmetic unit
Data transmission of arithmetic unit
1. Dedicated data path
2. Internal single bus mode
Controller
The basic composition of the controller
CPU
1. After the PC fetches the instruction, the instruction is first analyzed by the instruction register
2. The instruction is divided into operators and operands; the operator is parsed into micro instructions by the instruction decoder ID
3. Controlled by the micro-operation signal generator Whether each signal on the way is effective (green and blue signal)
4. Then according to the operand in the instruction register, the data is fetched from the main memory through MAR, and then the data is returned to the register of the arithmetic unit through MDR.