This topic discusses the concept of the CPU and its components.

1. CENTRAL PROCESSING UNIT

2. LESSON OBJECTIVES
 Define the central processing unit
 List the components of the CPU
 State the functions of the arithmetic and
logic unit (ALU) and the control unit (CU)
 What is the CPU?
 State the components of the CPU and
explain one of them

3. INTRODUCTION
The central processing unit (CPU) is a computer chip called a processor. It is the
brainofthecomputer.Itisthepartofthecomputerthatperformsmanipulations
ofdatasuchascalculations.Inpersonalcomputers,theCPUishousedinasingle
chipcalledamicroprocessor.
ThemainfocusoftheCPUisitmanagesdatapaths,monitorscacheandregisters
clockmanagementetc.TheperformanceoftheCPUisdependentontheclockrate.

4. COMPONENTS OF THE CPU
1.Control unit (CU)
2. Arithmetic logic unit (ALU)
3. Memory Unit

5. FUNCTIONS OF THE CONTROL UNIT
1. It controls and coordinates the operations
of the computer system.
2. It communicates with the ALU and main
memory
3. It coordinates the activities of peripheral
and auxiliary storage devices
4. It uses the instruction register in routing
the next instruction to be executed
5. It manages the system clock.

6. FUNCTIONS OF THE ARITHMETIC LOGIC
UNIT(ALU)
1.It executes all arithmetic and logical
operations.
2.It performs comparison of numbers.
3.It performs logical operations.

7. REGISTERS
Registers are temporary storage areas
for instructions and data in the CPU.
Examples of registers include program
counter, Current instruction register,
Memory address register, Memory data
register etc.

8. THANK YOU