Examination on Computer Studies
Class: Primary 3
Term: Second Term
Time: 1 Hour
Total Marks: 70

SECTION A: OBJECTIVES (40 Marks)
Instruction: Answer all questions.

1. ________ is a device that displays information from the computer. (a) Monitor (b) Keyboard (c) Mouse
2. Which of these is known as the brain of the computer? (a) Monitor (b) System Unit (c) Printer
3. The part of the computer that shows pictures and text on its screen is called the ________. (a) Speaker (b) Monitor (c) Printer
4. A device that puts copies of documents or pictures on paper is called a ________. (a) Scanner (b) Printer (c) Monitor
5. Which of these is NOT found inside the system unit? (a) Motherboard (b) Monitor (c) Floppy disk drive
6. All of these are types of disk drives except ________. (a) Hard disk drive (b) Monitor drive (c) CD-ROM drive
7. The Arithmetic Logic Unit (ALU) helps the computer perform ________ operations. (a) Printing (b) Arithmetic and logic (c) Displaying
8. An example of an output device that produces sound is a ________. (a) Speaker (b) Microphone (c) Camera
9. The main circuit board that connects all other parts inside the system unit is the ________. (a) Hard disk (b) Monitor (c) Motherboard
10. The main reason for using a printer is to get ________ copies of information. (a) Soft (b) Digital (c) Hard
11. RAM stands for Random ________ Memory. (a) Access (b) Active (c) Automatic
12. Which of the following is a basic function of the Control Unit (CU)? (a) Storing programs (b) Managing all computer operations (c) Performing calculations
13. Which of these is not a real type of drive found in the system unit? (a) Floppy disk drive (b) Monitor drive (c) CD-ROM drive
14. The system unit is sometimes referred to as the ________. (a) Monitor (b) Keyboard (c) CPU
15. The correct description of an output device is a device that ________. (a) Takes information into the computer (b) Shows information from the computer (c) Saves information forever
16. Which component inside the CPU helps the computer to perform calculations and make comparisons? (a) RAM (b) ALU (c) Control Unit
17. A monitor is primarily used to ________ information to the user. (a) Input (b) Store (c) Display
18. What is the main use of a CD-ROM drive in a computer? (a) To print documents (b) To read information from CDs (c) To save data on floppy disks
19. The motherboard connects all the other important ________ of the computer together. (a) External devices (b) Internal components (c) Software programs
20. The Control Unit (CU) is an important part of the ________. (a) Monitor (b) Printer (c) CPU

SECTION B: THEORY (30 Marks)
Instruction: Answer any THREE questions.

1. (a) Define what an output device is. (2 marks)
(b) Give two examples of output devices. (3 marks)
(c) Describe the main function of a computer monitor. (3 marks)
(d) State one basic property of a monitor. (2 marks)

2. (a) What is a printer used for? (2 marks)
(b) Explain briefly how a printer works to produce a hard copy. (3 marks)
(c) What is the system unit commonly called? (3 marks)
(d) State one importance of the system unit in a computer. (2 marks)

3. (a) List two types of disk drives found in the system unit. (2 marks)
(b) Describe the use of a Hard Disk Drive (HDD). (3 marks)
(c) What is the motherboard and where is it found? (3 marks)
(d) Name one unit that can be found on the motherboard. (2 marks)

4. (a) What do the letters CPU stand for? (2 marks)
(b) Explain the primary function of the Arithmetic Logic Unit (ALU). (3 marks)
(c) What is RAM and what is its basic use in a computer? (3 marks)
(d) State one key function of the Control Unit (CU). (2 marks)

Objective Marking Scheme
Question 1 – ✅ (a) Monitor
Question 2 – ✅ (b) System Unit
Question 3 – ✅ (b) Monitor
Question 4 – ✅ (b) Printer
Question 5 – ✅ (b) Monitor
Question 6 – ✅ (b) Monitor drive
Question 7 – ✅ (b) Arithmetic and logic
Question 8 – ✅ (a) Speaker
Question 9 – ✅ (c) Motherboard
Question 10 – ✅ (c) Hard
Question 11 – ✅ (a) Access
Question 12 – ✅ (b) Managing all computer operations
Question 13 – ✅ (b) Monitor drive
Question 14 – ✅ (c) CPU
Question 15 – ✅ (b) Shows information from the computer
Question 16 – ✅ (b) ALU
Question 17 – ✅ (c) Display
Question 18 – ✅ (b) To read information from CDs
Question 19 – ✅ (b) Internal components
Question 20 – ✅ (c) CPU