Computer composition principle-Reading Notes (5) central processor

CPU functions:

 

Basic CPU components:

 

CPU = memory + controller + Cache

Generator = Alu (arithmetic logic unit) + accumulators + latches

Controller = program counter + instruction register + data buffer + address register + general register + State Register + time series generator + instruction decoder + bus (data path)

 

Command cycle: the period of value, the time required to analyze the command, and the time required to execute the command.

 

Machine cycle: Also known as CPU cycle

Generally, a command cycle is divided into several machine cycles, and each machine cycle completes a basic operation.

The CPU cycle is defined based on the master memory's work cycle (access cycle). For example, you can use the CPU to read the shortest time of a script to specify the CPU cycle.

Different commands may contain different numbers of machine cycles.

A machine cycle contains several machine cycles (Cycle Pulse or t pulse ).

The CPU cycle is specified. Different computers have different requirements.

 

A command consists of one instruction fetch cycle and one or more execution cycles.

Computer composition principle-Reading Notes (5) central processor