Lesson Notes By Weeks and Term - Senior Secondary 2

Central Processing Unit (CPU)

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Term: 1st Term

Week: 1

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 2 periods each

Date:

Subject:      Computer Studies and ICT

Topic:-       Central Processing Unit(CPU)

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

  1. Explain the meaning of the Central Processing Unit(CPU)
  2. List and explain the components of the CPU

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, pictures, Data Processing for senior Secondary Education by Hiit Plc, WAPB Computer Studies for Senior Secondary II by Adekunle et  al, On-line Materials.

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S ACTIVITY

STEP 1

INTRODUCTION

The teacher reviews the previous lesson on Presentation packages

Students pay attention

STEP 2

EXPLANATION

He explains the meaning of Central Processing Unit(CPU)

 

Students pay attention and participates

STEP 3

DEMONSTRATION

He lists and explains the functions of the components of the Central Processing Unit(CPU)

Students pay attention and participate

STEP 4

NOTE TAKING

The teacher writes a summarized note on the board

The students copy the note in their books

 

NOTE

CENTRAL PROCESSING UNIT(CPU)

The Central Processing Unit (CPU) is the computer component that's responsible for interpreting and executing most of the commands from the computer's other hardware and software.

 

All sorts of devices use a CPU, including desktop, laptop, tablet computers, and smartphones...even your flat-screen television set.

Intel and AMD are the two most popular CPU manufacturers for desktops, laptops, and servers, while NVIDIA and Qualcomm are big smartphone and tablet CPU makers.

 

CPU has different names including processor, microprocessor or the “brain of the computer”.

 

A modern CPU is usually small and square, with short, rounded, metallic connectors on its underside. Some have pins instead of metallic connectors.

 

The CPU attaches directly to a CPU ‘socket’ (or sometimes a ‘slot’) on the motherboard. The CPU is inserted into the socket pin-side-down.

The clock speed of a processor is the number of instructions it can process in any given second, measured in hertz (Hz). A CPU with a clock speed of 3.0 GHz can process 3 billion instructions each /per second.

Some devices have a single-core processor while others may have a dual-core (or quad-core, etc.) processor.

 

Components of the CPU

The components of the CPU work together to achieve its functions. The three components are:

  1. Arithmetic Logic Unit
  2. Control Unit
  3. Registers

 

Functions of Arithmetic Logic Unit (ALU)

  1. Executes all arithmetic operations such as ADD, SUBTRACT, DIVIDE etc.
  2. Executes logical operations (i.e. making comparison) such as AND, OR, XOR etc.

 

Functions of Control Unit (CU)

  1. It directs the flow of data and information in the computer.
  2. It oversees the operation of the input and output (I/O) devices.
  3. Interprets instructions

 

Registers

Registers are temporary storage location used to quickly accept, store, and transfer data and instructions that are being used immediately by the CPU. They are special purpose memory which resides within the CPU

 

EVALUATION:    1. Explain the Central Processing Unit(CPU)

  1. List and explain the functions of the components of the                              CPU

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively