1. NAME: ENIMIL KWEKU BOATENG
COURSE: ELECTIVE ICT
TOPIC: hardware components 2
EMAIL: KWEKUBOATENG38@GMAIL.COM
WEB: HTTP://ENIMIL.000WEBHOSTAPP.COM

2. Lesson quote
Our greatest weakness lies in giving up.
The most certain way to succeed is
always to try just one more time.
Thomas Alva. Edison

3. LESSON OBJECTIVES
At the end of this lesson, the student should be able to:
Identify the main parts of the central processing unit.
Describe the processes involved in the machine cycle.

4. Main Parts of the Central
Processing Unit

5. THE CPU
The Central Processing Unit (CPU) of a computer is a piece
of hardware that carries out the instructions of a computer
program. It performs the basic arithmetic, logic, and
input/output operations of a computer system. Some
examples are: Intel,AMD Qualcomm snapdragon, etc.

6. MAIN PARTS OF THE CPU
Control Unit
Arithmetic and logic unit
Other Parts of the CPU
Registers
Cache
Buses

7. Control unit
It fetches, decodes and executes instructions.
It issues control signals that control hardware. It also
directs these control signals between the CPU, input and
output devices.
It moves data around the system.

8. Arithmetic logic unit
It performs arithmetic (mathematics) and logical
operations (decisions).TheALU is where calculations are
done and where decisions are made.
It acts as a gateway between primary memory and
secondary storage. Data transferred between them
passes through the ALU.

9. registers
Registers are small amounts of high-speed memory
contained within the CPU used by the processor to store
small amounts of data that are needed during processing,
such as:
the address of the next instruction to be executed
the current instruction being decoded
the results of calculations

10. Types of registers
Memory address register
Memory data register
Memory buffer register
Accumulator
Program counter

11. buses
A bus is a high-speed internal connection used to send
control signals and data between the processor and other
components.
The types of buses involved are:
Address bus
Data bus
Control bus

12. Cache
Cache is a small amount of high-speed random access
memory (RAM) built directly within the processor. It is used
to temporarily hold data and instructions that the processor
is likely to reuse.This allows for faster processing as the
processor does not have to wait for the data and
instructions to be fetched from the RAM.

13. The machine cycle – how the cpu works
Fetch
Decode
Execute
Store
Can be arranged and pronounced as FDES (FeDES)

14. Try thy hands on
1. List and explain how the CPU works
Clearly distinguished between control unit and
arithmetic logic unit.
Define the following:
A. Heat sink
B. Clockspeed
C.Word length
D. Memory address

15. Thanks 4 watching
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Data Representation
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