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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 25 · 40 questions
TalentJR

Remember (One chip, one job): Microcontroller = processor + memory + input/output pins on one chip. Board parts: USB port (power and code), pins, reset button, power LED, main chip, voltage regulator. Write the program → upload over USB → it runs its loop for ever; power by USB or a small battery.

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  1. 1.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the voltage regulator (c) the USB port (d) the reset button
  2. 2.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a microwave oven (d) a wind-up toy
  3. 3.Which job is done by the USB port? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) runs the program
  4. 4.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the reset button (c) the USB port (d) the pins
  5. 5.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) sent by sound (d) drawn with a pen
  6. 6.Which of these has no microcontroller inside? (a) a washing machine (b) a hand pump (c) a smart watch (d) a digital alarm clock
  7. 7.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a wind-up toy (d) a smart watch
  8. 8.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  9. 9.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  10. 10.Which job is done by the reset button? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) restarts the program
  11. 11.True or false: a laptop runs many apps at once. (a) True (b) False
  12. 12.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  13. 13.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  14. 14.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  15. 15.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  16. 16.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  17. 17.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the USB port (c) the voltage regulator (d) the reset button
  18. 18.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  19. 19.🤖 What is a microcontroller? (a) a big desktop computer (b) a computer on one chip (c) a kind of bulb (d) a type of battery
  20. 20.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the reset button (c) the USB port (d) the pins
  21. 21.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  22. 22.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  23. 23.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  24. 24.True or false: a microcontroller uses very little power. (a) True (b) False
  25. 25.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the power LED (c) the USB port (d) the pins
  26. 26.True or false: a laptop uses very little power. (a) False (b) True
  27. 27.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  28. 28.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  29. 29.True or false: a microcontroller runs one small program. (a) False (b) True
  30. 30.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  31. 31.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  32. 32.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the USB port (c) the pins (d) the reset button
  33. 33.True or false: a microcontroller has no screen of its own. (a) True (b) False
  34. 34.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a 230 V cable (d) a wall socket directly
  35. 35.Which of these has no microcontroller inside? (a) a plain wall switch (b) a smart watch (c) a microwave oven (d) a washing machine
  36. 36.Which job is done by the power LED? (a) restarts the program (b) shows the board is on (c) brings power and code (d) runs the program
  37. 37.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  38. 38.True or false: a microcontroller needs much more power. (a) False (b) True
  39. 39.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  40. 40.True or false: a laptop has a built-in keyboard. (a) False (b) True

Answer key

  1. the pins
  2. a microwave oven
  3. brings power and code
  4. the voltage regulator
  5. uploaded over USB
  6. a hand pump
  7. a smart watch
  8. microcontroller
  9. True
  10. restarts the program
  11. True
  12. No
  13. Yes
  14. No
  15. Yes
  16. True
  17. the main chip
  18. False
  19. a computer on one chip
  20. the USB port
  21. microcontroller
  22. True
  23. microcontroller
  24. True
  25. the power LED
  26. False
  27. Yes
  28. laptop
  29. True
  30. False
  31. laptop
  32. the reset button
  33. True
  34. USB or a 9 V battery
  35. a plain wall switch
  36. shows the board is on
  37. No
  38. False
  39. True
  40. True

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