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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 553 · 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 of these has no microcontroller inside? (a) a hand pump (b) a TV remote (c) a smart watch (d) a washing machine
  2. 2.True or false: a microcontroller needs much more power. (a) True (b) False
  3. 3.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  4. 4.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  5. 5.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the reset button (c) the pins (d) the voltage regulator
  6. 6.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  7. 7.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the pins (c) the USB port (d) the power LED
  8. 8.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  9. 9.Which job is done by the power LED? (a) shows the board is on (b) keeps the voltage steady (c) restarts the program (d) runs the program
  10. 10.True or false: a microcontroller uses very little power. (a) False (b) True
  11. 11.Which of these has no microcontroller inside? (a) a washing machine (b) a toy robot (c) a digital alarm clock (d) a wind-up toy
  12. 12.True or false: a candle has no microcontroller inside. (a) False (b) True
  13. 13.Which of these has no microcontroller inside? (a) a spinning top (b) a digital thermometer (c) a smart watch (d) a digital alarm clock
  14. 14.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it deletes itself (c) the board breaks (d) it starts again
  15. 15.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  16. 16.True or false: a laptop uses very little power. (a) True (b) False
  17. 17.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  18. 18.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  19. 19.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) sent by sound (c) drawn with a pen (d) typed on the chip
  20. 20.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  21. 21.Which job is done by the pins? (a) keeps the voltage steady (b) shows the board is on (c) restarts the program (d) connect sensors and LEDs
  22. 22.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  23. 23.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  24. 24.True or false: a laptop runs one small program. (a) False (b) True
  25. 25.True or false: a microcontroller has no screen of its own. (a) True (b) False
  26. 26.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a microwave oven (d) a hand pump
  27. 27.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  28. 28.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  29. 29.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  30. 30.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a digital thermometer (d) a wind-up toy
  31. 31.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a hand pump (d) a washing machine
  32. 32.True or false: a laptop has a built-in keyboard. (a) False (b) True
  33. 33.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  34. 34.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  35. 35.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a TV remote (c) a plain wall switch (d) a candle
  36. 36.Which job is done by the reset button? (a) shows the board is on (b) keeps the voltage steady (c) brings power and code (d) restarts the program
  37. 37.Which of these has no microcontroller inside? (a) a digital thermometer (b) a smart watch (c) a TV remote (d) a bicycle bell
  38. 38.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  39. 39.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  40. 40.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the reset button (c) the voltage regulator (d) the power LED

Answer key

  1. a hand pump
  2. False
  3. microcontroller
  4. Yes
  5. the pins
  6. No
  7. the USB port
  8. No
  9. shows the board is on
  10. True
  11. a wind-up toy
  12. True
  13. a spinning top
  14. it starts again
  15. False
  16. False
  17. False
  18. True
  19. uploaded over USB
  20. Yes
  21. connect sensors and LEDs
  22. False
  23. Yes
  24. False
  25. True
  26. a microwave oven
  27. True
  28. True
  29. True
  30. a digital thermometer
  31. a washing machine
  32. True
  33. No
  34. False
  35. a TV remote
  36. restarts the program
  37. a bicycle bell
  38. Yes
  39. microcontroller
  40. the voltage regulator

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