System Unit – Internal Features of CPU
TOPIC: System Unit – Internal Features of CPU
SUBTOPIC: Identifying and Stating the Uses of CPU Internal Features
CLASS: Basic 3
AGE: 7–8 years
DATE: ____________________
PERIOD: ____________________
DURATION: 40 minutes
LEARNING OBJECTIVES
By the end of the lesson, pupils should be able to:
- Explain what the CPU (Central Processing Unit) is.
- Identify the main internal parts of the CPU.
- State the function of each part in simple terms.
KEY VOCABULARY WORDS
- CPU (Central Processing Unit)
- Motherboard
- Processor
- RAM (Random Access Memory)
- BIOS Battery
- Fan
- Power Supply Unit
INSTRUCTIONAL MATERIALS
- Opened CPU unit for demonstration
- Diagrams of CPU internal parts
- Projector or large printed charts
CONTENT OF THE LESSON
Meaning of CPU
The CPU is the brain of the computer. It is found inside the system unit and controls all the work the computer does.
Internal Features of the CPU and Their Uses
Part | Function | |
Motherboard | The main board that connects all parts of the computer. | |
Processor (Microprocessor) | Performs calculations and processes instructions. | |
RAM (Memory) | Stores information temporarily while the computer is on. | |
BIOS Battery | Keeps the computer’s clock and settings running when it is off. | |
Fan | Keeps the CPU cool. | |
Power Supply Unit (PSU) | Provides electricity to the computer. |
How These Parts Work Together
Think of the CPU like a small office:
- The Processor is the manager giving instructions.
- The Motherboard holds main components of the computer.
- The RAM is the short-term memory of the computer. It is like a notepad for short reminders.
- The BIOS Battery is the tiny clock that keeps time even at night.
- The Fan is the air conditioner.
- The PSU is the electric power source.
INTRODUCTORY ACTIVITY
Teacher opens a system unit (or shows a video) and lets pupils see the parts while naming them aloud.
CLASS EXERCISE 1
Fill in the blanks:
- The CPU is called the __________ of the computer.
- The __________ stores temporary information.
- The __________ keeps the CPU cool.
CLASS EXERCISE 2
Match the part to its function:
- Processor → __________
- Fan → __________
- PSU → __________
ASSIGNMENT (Multiple-Choice Questions)
- The CPU is found inside the? A. Keyboard B. System Unit C. Mouse D. Monitor
- Which part is like the “brain”? A. Processor B. Fan C. PSU D. Battery
- Which part cools the CPU? A. Processor B. PSU C. Fan D. RAM
- RAM stores data for? A. Short time B. Forever C. 1 year D. 1 week
- The PSU gives the CPU? A. Power B. Instructions C. Data D. Cooling