First Term ICT Lessons for Primary 5
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PRIMARY 5 ICT FIRST TERM
WKS TOPIC PERFORMANCE OBJECTIVE
1. Meaning of Computer systems system
2. Components of (I) explain the term hardware
Computer system (II) explain the term software
– Hardware
– Software
3. Components of Computer system users
4. Classes of (I) identify different types of Computer by type computer
– Analogue (II) mention types of computer
– Digital
– Hybrid
5. Classification by computer by size
6. Classification of computers by generation
7. Classification of Computer by purpose
8. Mainframe
9. Super computer
10. Mini – computer
11. Micro – computer
12. Revision
13. Examination
WEEK 1&2
THE COMPUTER SYSTEM
BEHAVIORAL OBJECTIVES: At the end of the lesson, pupils should be able
to:
1. Explain the term computer system
2. Explain computer hardware and software
CONTENT
Meaning of Computer System
A computer is an information machine that can store, retrieve and process
data. A computer is also an electronic machine which accepts data as input,
processes data and gives out information as results or output. Data are
figures, words and symbols which the computer works upon.
A computer system is one that is able to take a set of inputs, process them and
create a set of outputs. This is done by a combination of hardware and
software. Computer systems will include the computer along with any
software and peripheral devices that are necessary to make the computer
function. Every computer system, for example, requires an operating system.
Components of the computer system
The computer system has three components. These are the hardware, the
software and the users.
Hardware components
The hardware components of the computer system are the parts that we can
see, feel or touch.
The three types of hardware components of the computer system are:
i) Input devices
ii) System unit
iii) Output devices
Input devices
We enter data into the computer through the input devices these input devices
are the keyboard, mouse, joystick, microphone and light pen.
The system unit is made up of the central
processing unit (CPU), and the main memory.
Data is processed in the CPU and it has two parts.
These are the:
i) arithmetic and logic unit
ii) control unit
Output devices
Through the output devices, the computer gives
out information to the user. This information is theresult of the processing
activities in the CPU.
EVALUATION
. Explain the term computer system
2. Explain computer hardware and software
WEEK 3
Software components
A computer solves a problem only when it receives instructions. These
instructions are the software of the computer. A set of instructions is called a
program. There are three types of software. These are the system software,
programming languages and application software.
Users
The third component of the computer system is the user. Users are the people
that use the computer. The computer cannot function by itself if not operated
by human beings. This component is also known as the people ware.
There are different types of computer users.
Some of them are:
1 Computer policy makers: These are people that make laws concerning the
making of the computer.
2 Programmers: These are people that write instructions for the computer to
perform certain operations.
3 Operators: These are the people that have direct contact with the computer,
and they use it on a daily basis.
EVALUATIO
. Explain the term computer system
2. Explain computer hardware and software
WEEK 4&5
Classification of Computers
BEHAVIORAL OBJECTIVES: At the end of the lesson, pupils should be able
to:
1. LIST COMPUTER by size
2. Mention the different sizes of computers
CONTENT
Classification Of Computers
Computer can be classified or typed in many ways some common
classifications include;
● According to Size
● According to Type
● According to Purpose
1) Classification By Type
THERE ARE THREE TYPES OF COMPUTERS IN USE TODAY
NAMELY;
1. Analogue computer
2. Digital computer
3. Hybrid computer.
Analogue computer
Analogue computers are either electronic or hydraulic devices that are
designed to exploit mathematical similarity between physical
interrelationships in certain problems instead of numeric, to process their data
FOR INSTANCE: Imagine a computer that receives current as input then
converts it in to voltage which may now be added or multiplied and sent to
other devices for a specific purpose. The term analogue means ‘‘continuity’’ of
associated quantity like an analogue clock measures time by means of the
distance travelled by the hand of the clock around a dial.
Examples
● Analogue clock
● Tire pressure gauge
● Thermometer
ADVANTAGES
1. Store images
2. Sound, motion pictures
3. Devices and media that represent.
DISADVANTAGES
● Complexity
● They were very complicated for containing output for the users
some time.
DIGITAL COMPUTER
Digital computer solves problems by performing calculations and by dealing
with each number digit by digit. Every things that a digital computer does is
based on one operation .The ability to determine whether a switch or ‘‘gate’’,
is open or closed that is, the computer can recognize only two states in any of
its microscopic circuit on or off, high voltage or low voltage. Using the binary
system of numbers where there in only I and O,
1 stands for on and O stands for off. The speed at which the computer
performs this simple act however, it is what makes it a marvel or Modern
technology.
Examples
● Digital watches
● Calculators
● Speedometer
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