Chapter 2

2.1 Central Processing Unit

A computer system is one that is able to take a set of inputs, process them and create outputs. This is done by a combination of Hardware and Software.
The Central Processing Unit (CPU) is the part of the computer that does the processing. It also controls the transfer of data between memory and other devices that make up the computer system. The CPU consists of:

The Control Unit (CU)- controls the flow of data in and out of the (CPU)
The Arithmetic Logic Unit (ALU)- performs arithmetic and logic functions

Teaching & Learning Objectives

Identify various components of CPU
Describe the function of each unit and the relationship between the internal components of a personal computer
Know operations of computer using various hardware components and software modules

2.2 Primary/Main Memory (RAM,ROM), Secondary Memory
Teaching & Learning Objectives

Describe computer memory and its types i.e. primary and secondary
State the differences between RAM and ROM
Describe the need for secondary memory

2.3 Input Devices (keyboard, mouse, joystick, scanner, trackball, light pen, voice synthesizer, microphone, digital video camera, disk drive)

Teaching & Learning Objectives:

Name different input devices
Demonstrate the use of a mouse and the function of right and left click
Describe the five key groups of a keyboard
Describe suitable input devices in relation to the requirements of the applications
Give reasons for the use of alternate methods of input over a standard keyboard or mouse
Describe the types of optical input devices and their uses
Describe the need for secondary memory

2.4 Output Devices (monitors, printers and their kinds, plotters, CD writer, disk drive (hardcopy, softcopy)
Teaching & Learning Objectives:

Name various output devices.
Describe suitable output devices in relation to the requirements of the applications.
Justify the use of hardcopy output over softcopy output.

Teaching Methodology for 2.1--2.4:

White board- will be used to write students responses
Show them a Block Diagram of CPU
PowerPoint and projector- will be used to display the content and class activity (Assessment) to students
Text book- students will use text books to do further reading
Class discussion would be done(Students Centered)

PLANNER 2022-2023