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

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

1. ________ is a device used for counting that has beads on rods. (a) Calculator (b) Abacus (c) Keyboard
2. Charles Babbage is known as the father of the ________. (a) Television (b) Computer (c) Radio
3. An example of an early counting device is ________. (a) Mouse (b) Stones (c) Printer
4. Which of the following is an input device? (a) Speaker (b) Monitor (c) Keyboard
5. The keys on a keyboard used to type numbers are called ________ keys. (a) Alphabetic (b) Numeric (c) Function
6. Which of these is NOT a function of a computer mouse? (a) Clicking (b) Typing words (c) Scrolling
7. All of these are early counting devices except ________. (a) Sticks (b) Calculator (c) Cowries
8. The main reason for using a calculator is to ________. (a) Play games (b) Perform arithmetic (c) Draw pictures
9. A computer ________ is used to input text and numbers. (a) Screen (b) Keyboard (c) Speaker
10. Which of these is not a common type of keyboard? (a) Standard keyboard (b) Wireless keyboard (c) Round keyboard
11. The Pascaline device was an early form of a mechanical ________. (a) Calculator (b) Printer (c) Monitor
12. Moving the screen up or down to view more content is called ________. (a) Clicking (b) Dragging (c) Scrolling
13. What device helps to move the cursor on the computer screen? (a) Keyboard (b) Mouse (c) Monitor
14. The correct step to move an item on the screen using a mouse is ________. (a) Double-clicking (b) Dragging (c) Right-clicking
15. Fingers, toes, and pebbles are examples of ________ counting devices. (a) Modern (b) Early (c) Digital
16. A computer mouse can have different ________ like optical or mechanical. (a) Colours (b) Designs (c) Sizes
17. The keys labelled F1 to F12 on a keyboard are called ________ keys. (a) Numeric (b) Alphabetic (c) Function
18. To highlight text on a computer screen, you would use the ________. (a) Keyboard (b) Mouse (c) Microphone
19. Napier’s Bones was a device primarily used for ________. (a) Addition (b) Multiplication (c) Division
20. A device that allows us to send information into the computer is called an ________ device. (a) Output (b) Input (c) Storage

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

1. (a) List two early counting devices. (2 marks)
(b) Explain how pebbles were used for counting. (3 marks)
(c) Describe what an Abacus is. (3 marks)
(d) State one use of an Abacus. (2 marks)

2. (a) Define an input device. (2 marks)
(b) Identify three common input devices. (3 marks)
(c) Describe a computer keyboard. (3 marks)
(d) Name two classes of keys found on a keyboard. (2 marks)

3. (a) Describe two features of a computer mouse. (2 marks)
(b) Explain the difference between ‘clicking’ and ‘dragging’ with a mouse. (3 marks)
(c) State three special keys on a keyboard and their functions. (3 marks)
(d) How would you use a keyboard to type your name? (2 marks)

4. (a) Name the person known as the “father of the computer”. (2 marks)
(b) Describe the Pascaline device. (3 marks)
(c) Explain how early counting devices are different from modern computers. (3 marks)
(d) Mention two materials used as early counting devices. (2 marks)

Objective Marking Scheme

Question 1 – ✅ (b) Abacus
Question 2 – ✅ (b) Computer
Question 3 – ✅ (b) Stones
Question 4 – ✅ (c) Keyboard
Question 5 – ✅ (b) Numeric
Question 6 – ✅ (b) Typing words
Question 7 – ✅ (b) Calculator
Question 8 – ✅ (b) Perform arithmetic
Question 9 – ✅ (b) Keyboard
Question 10 – ✅ (c) Round keyboard
Question 11 – ✅ (a) Calculator
Question 12 – ✅ (c) Scrolling
Question 13 – ✅ (b) Mouse
Question 14 – ✅ (b) Dragging
Question 15 – ✅ (b) Early
Question 16 – ✅ (b) Designs
Question 17 – ✅ (c) Function
Question 18 – ✅ (b) Mouse
Question 19 – ✅ (b) Multiplication
Question 20 – ✅ (b) Input