therapyopf.blogg.se - Cpu central processing unit computer science

The memory address register will pass this on the address bus to primary memory(usually RAM).

This is passed to the memory address register to hold.

The Program Counter fetches the address of the next instruction to be processed.

The computer will fetch an instruction from memoryįinally it will execute it What are the components of a CPU? This is done using the fetch execute cycle.

From this we know there are 4 main stages or parts : Arithmetic Logic Unit – Does any arithmetic(add/subtract/multiply/divide) and Logic(comparing values) operationsĬomputers need to take an input, process it and then output a result.

Buses – Wires connecting the components which enable the transfer of data, address details and control signals.Control Unit – Controls the flow of data in the CPU.A CPU (Central Processing Unit) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions