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WAEC Computer Studies questions

291 questions with answers and explanations. Tap an option to check yourself.

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All topicsAlgorithms and flowcharts · 21Application packages · 25Computer hardware and the CPU · 21Computer networks and the internet · 23Computer security, ethics and safety · 22Data processing and information · 22Evolution of computing · 23Input and output devices · 22Logic gates and Boolean algebra · 21Memory and storage devices · 23Number systems and data representation · 24Programming languages and BASIC · 22Software and operating systems · 22

  1. Question 161· Input and output devices· WAEC

    Which of these is an output device?

    Explanation and discussion

  2. Question 162· Input and output devices· WAEC

    An inkjet printer forms characters by

    Explanation and discussion

  3. Question 163· Input and output devices· WAEC

    A printer that produces output by firing tiny droplets of ink onto paper is

    Explanation and discussion

  4. Question 164· Input and output devices· WAEC

    The device used to mark answers on WAEC-type objective answer sheets automatically is the

    Explanation and discussion

  5. Question 165· Input and output devices· WAEC

    A touch screen is both

    Explanation and discussion

  6. Question 166· Input and output devices· WAEC

    Banks use MICR mainly to read

    Explanation and discussion

  7. Question 167· Input and output devices· WAEC

    Which of these is an impact printer?

    Explanation and discussion

  8. Question 168· Input and output devices· WAEC

    A monitor with 1920 × 1080 pixels has a total of about

    Explanation and discussion

  9. Question 169· Input and output devices· WAEC

    A device that reads the bars printed on goods in a supermarket is a

    Explanation and discussion

  10. Question 170· Input and output devices· WAEC

    A light pen is an

    Explanation and discussion

  11. Question 171· Input and output devices· WAEC

    Banks read the special characters on cheques using

    Explanation and discussion

  12. Question 172· Input and output devices· WAEC

    A device that reads shaded answer sheets in objective examinations is

    Explanation and discussion

  13. Question 173· Input and output devices· WAEC

    A touchscreen is both

    Explanation and discussion

  14. Question 174· Input and output devices· WAEC

    A device that converts printed text into editable text using OCR is a

    Explanation and discussion

  15. Question 175· Input and output devices· WAEC

    An impact printer that can print multi-part carbon copies is

    Explanation and discussion

  16. Question 176· Input and output devices· WAEC

    A plotter is used to produce

    Explanation and discussion

  17. Question 177· Input and output devices· WAEC

    A device used to convert printed pictures into digital form is the

    Explanation and discussion

  18. Question 178· Input and output devices· WAEC

    At a supermarket checkout, which device reads the product codes on items?

    Explanation and discussion

  19. Question 179· Input and output devices· WAEC

    A biometric fingerprint scanner used at an exam centre is an

    Explanation and discussion

  20. Question 180· Logic gates and Boolean algebra· WAEC

    An XOR gate with inputs A = 1 and B = 1 gives an output of

    Explanation and discussion

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