Computer Science Questions and Answers - Grade 7 End Term 1 Exams 2023 Set 1

QUESTIONS  

1. A computer has the ability to store _______________________ for future use. (1 mark)
2. What is data input? (1 mark)
3. Name the following examples of computers. (2 marks)
   
4. Explain three characteristics of a computer. (3 marks)
5. Maggie has been given an assignment on addition and multiplication in Mathematics. What can she use to speed up the calculation in her homework? (1 mark)
6. Drag and drop the computer parts on the correct place. (5 marks)
   
7. Muihoro works in Bidii Yetu bank as a clerk. State three ways in which computers are applied in the bank. (3 marks)
8. What was the function of the following computer? (1 mark)
   
9. What generation of computer is shown below? (1 mark)
   _______________________________

Study the component used in the computer below and answer questions 10 and 11.

10. What is the name of electronic component shown? (1 mark)
11. Which generation of computers used this component? (1 mark)
12. Chaka was given abacus and a modern calculator to work out the following.
    1. 4657 + 2342 =
    2. 1254 − 982 =
       1. Which of the machines was easy to use? (1 mark)
       2. Which of the machines helped her to perform tasks with speed and accuracy? (1 mark)
13. Abwoja has opened a restaurant in his hometown. What activities can he do using a computer to speed up service to customers? (2 marks)
14. Give two examples for each of the following classifications of computers.    (4 marks)
    

    General purpose computers	Special purpoose computers
    a)	a)
    b)	b)

15. Match the following types of computers with situations where they can be used. (2 marks)
    
16. Katumo has upgraded her computers for office use. What benefits of technological advancement in computers is she likely to enjoy? (3 marks)
17. Give reason why an ATM is an embedded computer. (1 mark)
18. What is the function of Anti-lock breaking system and airbag control system in a vehicle? (2 marks)
19. Mukabane wanted to set a computer user environment. He was interested in offering internet and printing services. Mention three factors he should consider. (3marks)

Study the pictures below and answer questions 20 to 22.  (4 marks)

20. Which computer user is seated in the right posture?
21. Whom do you think will suffer from back pain and fatigue?
22. Why do you think it is not good to look at the computer screen too closely?
23. Mention two safety precautions you should observe in a computer user environment. (2 mark)_
24. Give a reason why a fire extinguisher in a computer user environment is required. (1 mark)
25. Identify two resources required to set up a computer user environment. (2 marks)

MARKING SCHEME

1. Information
2. It involves entering data to a computer
3.  
   1. laptop
   2. desktop
4.  
   1. a computer performs different tasks.
   2. perorms task with speed and accuracy
   3. stores information for a long time
5. calculator
6. assess correct labelling
7.  
   1. processing cheques 
   2. preparation of payrolls
   3. better record keeeping
8. It was used for multiplications and division
9. fifth generation
10. vacuum tubes
11. first generation
12.  
    1. modem calculator
    2. modern calculator
13. calculating, customer balances, producing receipts
14.  
    1. desktops    -   Calculators
    2. laptops      -    smartphones
15. assess
16.  
    1. high storage capacity
    2. high efficiency
    3. high processing speed (assess)
17. It performs purpose
18. It prevents of the vehicle from locking and siddding therefore preventing accident, it protects the driver from injury when accident occurs
19.  
    1. the room should be well lit, there should be a reliable power source
    2. there should be adequate room, fire safety euipment should be  installed
20. b
21. a
22. it causes eyestrain and damage to the eyes.
23. do not touch naked cables do not eat or drink in the computer lab
24. It is used in case of fire break out
25. Internet, server