Parts of a Computer Keyboard
THIRD TERM
LEARNING NOTES
JSS 1
SUBJECT: BUSINESS STUDIES
CLASS: JSS 1 (BASIC 7)
SCHEME OF WORK
Subject :
BUSINESS STUDIES
Term :
THIRD TERM
Week:
WEEK 6
Class :
JSS 1 (BASIC 7)
Previous lesson :
The pupils have previous knowledge of
Topic :
Parts of the Typewriter: (i) Meaning of typewriter. Typewriter parts. (ii) Uses of parts of the typewriter.
Behavioural objectives :
At the end of the lesson, the pupils should be able to
- Demonstrate Correct sitting posture for keyboarding.
- Say the uses of parts of the typewriter.
- say the meaning of typewriter
Instructional Materials :
- Wall charts
- Pictures
- Related Online Video
- Flash Cards
Methods of Teaching :
- Class Discussion
- Group Discussion
- Asking Questions
- Explanation
- Role Modelling
- Role Delegation
Reference Materials :
- Scheme of Work
- Online Information
- Textbooks
- Workbooks
- 9 Year Basic Education Curriculum
- Workbooks
Content :
Topic: PARTS OF A COMPUTER KEYBOARD
Content: (i) parts of the computer keyboard
(ii) Uses (functions) of the parts the computer keyboard.
(iii) Similarities between the typewriter and computer keyboards.
Sub-Topic 1: Parts of the computer keyboard
MEANING OF COMPUTER
Computer is an electronic machine that receives and processes data in order to produce usable information. It can store, retrieve, edit and merge data or information.
Generation of computer
- First generation computer (1948-1958)
- Second generation computer (1959-1963)
- Third generation computer (1964-1970)
- Fourth generation computer (1971-1975)
- Fifth generation computer (1975-1995)
- Sixth generation computer (1995-date)
Types of Computer
- Analog computer
- Digital computer
- Hybrid computer
Classification of computer
- Supercomputers: They are the largest and are not common nowadays
- Mainframe computer: They are large and found in large business organizations.
- Mini computers: They are general-purpose systems. They are smaller and less expensive than mainframe.
- Micro Computer: They are called home computer, personal computer, desktop computer, portable computer, and laptop computer.
PARTS OF THE COMPUTER
The computer is made up of four different components namely:
- Keyboard
- Monitor
- Central processing unit or system unit control
- Mouse
Sub-Topic 2: Uses of the Components
USES OF THE COMPONENTS
- Keyboard: The keyboard is an input device. Data (facts that are undergoing processing) is fed into the computer system through keyboard. It is similar to the typewriter keyboard with the exception of the following keys:
i. Numerical key: They are above the alphabets and in the separate optional group.
ii. Control Keys: These include shift key, return key, cursor control key, cancel key, delete
key, exit key etc.
iii. Alt: This is located at the left of the space bar. It is known as the alternate key.
iv. Esc: This is the escape key. Its functions depend on the type of software
v. Functions keys: They are used for different tasks and various application programmes.
Vi Alphanumeric key: Alphabet keys (A-Z) and numeric key (0-9).
vii. Space Bar Key: It moves the cursor to the right when pressed and leaves spaces in
between text when pressed.
viii. Caps Lock Key: It is a toggle key i. e. on/off. It is used to shift from the lower case
character to the upper case characters and vice versa. When it is pressed, the cap
lock indicator light on and all characters are in upper cases.
ix. Enter or Return key: It returns the cursor to the beginning of a new line.
x. Back Space Key: It erases character to the left when pressed.
(b) Monitor:Monitor is the output device. It is a display screen like a television screen. It enablesthe user to see the keyed in data.
(C) Central processing unit (CPU):It is also known as system unit control. The data that is fed into the system through the keyboard, displayed on the screen through the monitor is manipulated by the CPU to generate information. The central processing unit is the life blood of a computer system because it locates each instruction to be carried out on the system and performs arithmetic and logic functions.
(D) Mouse: It is also an input device like the keyboard. It is a hand held device, with roller on the bottom. It is used to control the cursor on the computer screen (monitor). For effective control, the mouse must be placed on a flat, smooth and soft surface. By clicking the mouse, you can make active the icon pointed to on the screen.
SIMILARITIES BETWEEN THE TYPEWRITER AND COMPUTER KEYBOARD
- The two have same text character.
- They both produce documents in mail able form.
Difference between the Typewriter and the computer
- Computer does data processing while the typewriter does not.
- There is great reduction of errors in data and information from a computer while errors are many in a typewriter document.
- Computer ensures accuracy of information.
- Computer makes task easier to handle
- Computer provides efficient storage facilities
- Computer gives fast access to information
- There is reduction of paper work since information is stored in a compressed form(soft copy) occupying less space
Presentation
The topic is presented step by step
Step 1:
The class teacher revises the previous topics
Step 2.
He introduces the new topic
Step 3:
The class teacher allows the pupils to give their own examples and he corrects them when the needs arise
Class Discussion
Teacher and Students Interactions
Teacher : What is keyboard
Student :
Teacher :Mention the types of keyboard that you know
Student :
Teacher : What are the home keys
Student :
Teacher :What are the letters that make up the home keys
Student :
Teacher :What are the other functions of the keyboard
Student :
Teacher : State the other function that the interactive keyboard cam be used for
Student :
Pupils Activities
Let the student come with a laptop for practical or more preferably they can go and do the practical in the computer room
Conclusion
The class teacher wraps up or conclude the lesson by giving out short note to summarize the topic that he or she has just taught.
The class teacher also goes round to make sure that the notes are well copied or well written by the pupils.
He or she does the necessary corrections when and where the needs arise.
Evaluation:
- What is a computer?
- List the types of computer.
- List seven computer keys and their function.
- State the difference between a typewriter and a computer