Section A: 40 Marks
1. State two hardware technological differences between the second generation and the third generation computers. (2 marks)
The 2nd generation use transistor in its logic circuit while the 3rd generation used integrated circuit
2. State two ways of ensuring proper ventilation in a computer room. (2 marks)
3 (a) Explain the term toggle key as used in computer keyboard. (2 marks)
These are keys that alternate the input mode. When pressed ON they are
intended to perform a task, when OFF, they perform different task. @ 2
(b) List examples of toggle keys on a computer keyboard. (2 marks)
Caps lock, Insert, Num Lock and Scroll lock.
4. State three factors to consider when selecting an operating system to install in a computer. (3 marks)
5. Differentiate between analogue data and digital data as used in computers. (2 marks)
6. State two reasons for the increased use of laptop computers in government offices. (2 marks)
7. a) Explain three features of a graphical user interface as used in computers. (6 marks)
b) State the function of each of the following computer keyboard keys:
(i) Caps Lock (1 mark)
this is a toggle key that activates capital letter typing when on and small letters when off.
(ii) Shift (1 mark)
this is a key that when used with alphanumeric keys activates typing in uppercase and also enables keys with second functions to work. On its own, doesn't have a task to do.
(iii) Home (1 mark)
The home key takes the cursor to the start of a line when pressed. When used with the shift key, it takes the cursor to the start of a paragraph while using a text editor. When using a browser such as Firefox it scrolls the page to the top.
8. State three measures that should be put in place in a computer laboratory to safeguard users’ health. (3 marks)
9. State three ways in which barcode readers may be used in schools. (3 marks)
10. State three advantage of flat panel monitors over cathode ray tube monitors as used in computers. (3 marks)
11. State three possible reasons for the extinction of daisy wheel printers in the market. (3 marks)
12. A law firm prefers to use hard Copy output over soft Copy output when handling documents for legal matters. State two reasons for this preference (2 marks)
13. Describe two characteristics of parallel cables (2 Marks)
Section B: 40 Marks: Answer any Four Questions
a) Define the operating system (1 mark)
An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs. The operating system is a vital component of the system software in a computer system. Application programs require an operating system to function.
b) State any five functions of the operating system (5 marks)
c) Write the following acronyms in full (3 marks)
c) USB cables are the most popular interfaces with small computers today.
i) Write in full what the acronym USB stands for; (1 mark)
ii) State three advantages of USB interface over PS/2 interface. (3 marks)
iii) State any two application areas of USB cables which makes them more popular than other cables. (2 marks)
- Charging of microcomputers such as palmtops
- Support almost all peripheral devices
- Used as a data cable that transport data across small devices
d) State four safety precautions that should be observed before setting up computer hardware installation and maintenance activity. (4 marks)
- Disconnect all drives from power source before starting to work on them.
- Do not work on peripheral device without the guidance of a teacher.
- Never work alone because, you may need help incase of an emergency.
- Discharge any static electricity that might build upon the hands by touching an earthen metallic object and then wearing an antistatic wrist member. This is because your body can hold as much as 200 volts of static charge that can damage sensitive components on the mother board.
- Avoid touching metal conductors with wet hands. This may cause short circuiting thus damaging chipsets.
- Don’t force a component to open/eject. There are laid procedures for every opening/ejection. Force can break or destroy a component makeup.
Analogue And Digital Systems
Applications Areas Of Ict
Auxiliary Storage Devices
Career Opportunities In ICT
Classification Of Computers
Data Representation In A Computer
Data Security And Controls
Definition And Development Of Algorithm
Electronic Data Processing Modes
Elementary Programming Principles
Fibre Optic Cables
File Management Using An Operating System
Form 1 Level
Form 2 Level
Form 3 Level
Form 3 Mock Exams
Form 4 Level
Hands On Skills
HARDCOPY OUTPUT DEVICES
Impact Of Ict On Society
Internet And Email
Introduction To Computers
Introduction To Networking And Data Communication
Secondary Storage Media
Security Threats And Control Measures
Stages Of System Development
The Computer Laboratory
Types Of Computer Files