Computer Studies Questions and Answers - Form 1 Term 2 Opener Exams 2022

QUESTIONS

1. Define the following terms
   1. Computer (2mks)
   2. Data (2mks)
   3. Information (2mks)
   4. Processing (2mks)
   5. Program (2mks)
2. State the different physical parts that make up a computer. (4mks)
3. Why is a mobile phone regarded to be a computer? (5mks)
4. State and explain 4 characteristics of a computer. (4mks)
5. State three ways computers are classified.  (3mks)
6. Why the screen is also called monitor? (3mks)
7. Match the following generations of computers with the technology used to develop them.(4mks)
   1. First generation    -   Very large scale integrated circuits 
   2. Second generation    -   Thermionic valve (vacuum tubes)
   3. Third generation    -   Transistors 
   4. Fourth generation    -   Integrated circuits
8. Identify five areas where computers are used. (5mks)
9. What were the characteristics of the first generation computers? (6mks)
10. Who developed the analytical engine? (2mks)
11. Define the term artificial intelligence. (4mks)
12. With the aid of a diagram differentiate between tower and desktop types of system unit.(6mks)
13. Write the following acronyms in full: (6mks)
    1. ENIAC
    2. VLSI
    3. IC
14. Match the following computer application areas with the role played by computers in each case: (8mks)
    1. Supermarket Matching fingerprints
    2. Hospital Entertainment
    3. Bank Stock control
    4. Hotel Booking Rooms
    5. Home Analyzing academic data
    6. School manufacturing process control
    7. Industry Life support machines
    8. Police station Processing cheques

MARKING SCHEME

1. Define the following terms
   
   1. Computer (2mks)
      Electronic device capable of receiving data and performs a sequence of operations to produce output also known as information. 
   2. Data (2mks)
      Raw facts such as numbers, letters and symbols that have no meaning to the user.
   3. Information (2mks)
      Processed data that is meaningful to the user.
   4. Processing (2mks)
      Is manipulation of data to turn into information.
   5. Program (2mks)
      Is a set of instructions that a computer uses to perform a specific function.
2. State the different physical parts that make up a computer. (4mks)
   1. Central processing unit
   2. Monitor
   3. Mouse
   4. Keyboard
   5. printer
3. Why is a mobile phone regarded to be a computer? (5mks)
   It is electronic, has a screen, keypad, memory and is programmable.
4. State and explain 4 characteristics of a computer. (4mks)
   • Speed. A computer works with much higher speed and accuracy compared to humans while performing mathematical calculations. ... 
   • Accuracy. Computers perform calculations with 100% accuracy. ... 
   • Diligence. ... 
   • Versatility. ... 
   • Reliability. ... 
   • Memory.
5. Classify computers. (3mks)
   We classify according to:
   Physical size
   Purpose 
   Functionality
6. Why the screen is also called monitor? (3mks)Beca
   use it enables the user to monitor or see what is going on in the computer system.
7. Match the following generations of computers with the technology used to develop them.(4mks)
   1. First generation   -   thermionic valve (vacuum tubes)
   2. Second generation   -   transistors
   3. Third generation   -   integrated circuits
   4. Fourth generation   -   very large scale integrated circuits.
8. Identify five areas where computers are used. (5mks)
   Supermarkets
   Offices
   Banks
   Industries
   Health institutions
   Transport
   Law enforcement
   Education
   Domestic and entertainment
   Library services
   Communication 
9. What were the characteristics of the first generation computers?      (6mks)
   1. Use of vacuum tubes to make circuits
   2. Use of magnetic drums
   3. Use of machine language and symbols in instructions
   4. Very small amount of storage space
   5. Use of punch cards as I/O devices
   6. Huge in size and poor in mobility
   7. Very slow and less reliable output
   8. Use of high electricity
   9. Generates too much heats
   10. Complex and expensive to maintain
10. Who developed the analytical engine? (2mks)
    Charles Babbage
11. Define the term artificial intelligence. (4mks)
    Is the ability of a computer or a robot controlled by a computer to do tasks that are usually done by humans because they require human intelligence and discernment?
12. With the aid of a diagram differentiate between tower and desktop types of system unit.(6mks)
13. Write the following acronyms in full: (6mks)
    1. ENIAC-electronic numeric integrator and calculator
    2. VLSI-very large scale integrated
    3. IC-integrated circuits
14. Match the following computer application areas with the role played by computers in each case: (8mks)
    1. Supermarket  - Stock control 
    2. Hospital - Life support machines 
    3. Bank - Processing cheques
    4. Hotel - Booking Rooms 
    5. Home -  Entertainment 
    6. School - Analyzing academic data 
    7. Industry - manufacturing process control
    8. Police station - Matching fingerprints