CPU

Number $1$ in the diagram.

$$ Number $2$ in the diagram

Number $3$ in the diagram.

Number $4$ in the diagram.

$.$ darr Number $5$ in the diagram.

$.$ hat$()$ Number $6$ in the diagram.

hat$()$ Number $7$ in the diagram.

hat$()$ Number $8$ in the diagram.

hat$()$ Number $9$ in the diagram.

$,$ Central Processing Unit $($CPU$).$

A$.$ Clock signal. Defines the speed of the processor.

B$.$ Instructions. Define the operation to perform, the operands and the destination for the result.

C$.$ Control signals. Define what operation the ALU should perform.

D$.$ Status signals. Help the control unit decide what to do next.

E$.$ Control outputs. Define the locations in memory that need to be accessed.

F$.$ Input data. Operands for the ALU.

G$.$ Output Data. Results from the last operation.

H$.$ Instruction memory. Stores the programs executed by the CPU.

Data memory. Stores information generated and consumed by the CPU.

J$.$ It can be considered the brain of a computer.