CPU The Central Processing Unit (CPU), has 3 main parts: Control Unit Arithmetic and Logic Unit Registers. These components are connected to the rest.

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Presentation transcript:

CPU

The Central Processing Unit (CPU), has 3 main parts: Control Unit Arithmetic and Logic Unit Registers. These components are connected to the rest of the computer by buses.

The Arithmetic and Logic Unit (ALU) What does the ALU perform? - arithmetic functions such as ADD and SUBTRACT - and logic operations such as AND, OR, and NOT.

The Control Unit What does the control unit do? - makes the computer carry out each instruction of a program in the right order - controls the operation of all hardware

Registers What are registers? - temporary storage areas for data. What do registers do? - hold the instructions or data immediately required.