CPU Components

Question 1

Accumulator

Answer 1

Special register to temporarily store the results of operations performed by the ALU.

Question 2

ALU

Answer 2

Performs arithmetic calculations and logical operations on data.

Question 3

Control Unit

Answer 3

Controls and manages the execution of instructions.

Question 4

CIR

Answer 4

Stores current instruction being decoded and executed.

Question 5

MAR

Answer 5

Sores address of next instruction to execute.

Question 6

MDR

Answer 6

Temporarily stores data to be written to or read from computer’s memory.

Question 7

Program Counter

Answer 7

Stores address of next instruction to be executed.

Question 8

Registers

Answer 8

Special memory cells that are quick to access and temporarily store data.

Question 9

Address bus

Answer 9

Carries the memory location address of the register the data is being carried to or from.

Question 10

Data bus

Answer 10

Carries data and instructions between the processor and the main memory.

Question 11

Control bus

Answer 11

Carries control signals from the control unit to synchronize access and use of data.