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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 126 · 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.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  2. 2.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  3. 3.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) typed on the chip (c) drawn with a pen (d) uploaded over USB
  4. 4.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  5. 5.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the pins (c) the main chip (d) the voltage regulator
  6. 6.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a digital thermometer (c) a TV remote (d) a wind-up toy
  7. 7.Which of these usually has a microcontroller inside? (a) a hand pump (b) a spinning top (c) a microwave oven (d) a wind-up toy
  8. 8.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  9. 9.Which job is done by the USB port? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  10. 10.Which job is done by the voltage regulator? (a) runs the program (b) brings power and code (c) restarts the program (d) keeps the voltage steady
  11. 11.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  12. 12.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  13. 13.Which of these usually has a microcontroller inside? (a) a washing machine (b) a bicycle bell (c) a candle (d) a plain wall switch
  14. 14.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  15. 15.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a hand pump (c) a bicycle bell (d) a digital thermometer
  16. 16.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the power LED (c) the pins (d) the main chip
  17. 17.True or false: a laptop has no screen of its own. (a) True (b) False
  18. 18.Which job is done by the pins? (a) keeps the voltage steady (b) restarts the program (c) brings power and code (d) connect sensors and LEDs
  19. 19.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  20. 20.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a microwave oven (d) a candle
  21. 21.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  22. 22.True or false: a microcontroller needs much more power. (a) True (b) False
  23. 23.Which job is done by the power LED? (a) keeps the voltage steady (b) restarts the program (c) brings power and code (d) shows the board is on
  24. 24.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  25. 25.🤖 What is a microcontroller? (a) a computer on one chip (b) a kind of bulb (c) a big desktop computer (d) a type of battery
  26. 26.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) the board breaks (d) it deletes itself
  27. 27.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  28. 28.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  29. 29.Which of these usually has a microcontroller inside? (a) a hand pump (b) a smart watch (c) a candle (d) a wind-up toy
  30. 30.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  31. 31.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) bare mains wires (d) USB or a 9 V battery
  32. 32.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  33. 33.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  34. 34.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a spinning top (d) a digital thermometer
  35. 35.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the pins (c) the USB port (d) the reset button
  36. 36.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  37. 37.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the power LED (c) the pins (d) the USB port
  38. 38.True or false: a microcontroller has no screen of its own. (a) False (b) True
  39. 39.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the reset button (c) the voltage regulator (d) the USB port
  40. 40.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True

Answer key

  1. No
  2. No
  3. uploaded over USB
  4. microcontroller
  5. the pins
  6. a wind-up toy
  7. a microwave oven
  8. microcontroller
  9. brings power and code
  10. keeps the voltage steady
  11. No
  12. False
  13. a washing machine
  14. False
  15. a digital thermometer
  16. the power LED
  17. False
  18. connect sensors and LEDs
  19. True
  20. a candle
  21. No
  22. False
  23. shows the board is on
  24. Yes
  25. a computer on one chip
  26. it starts again
  27. False
  28. microcontroller
  29. a smart watch
  30. False
  31. USB or a 9 V battery
  32. False
  33. True
  34. a spinning top
  35. the voltage regulator
  36. True
  37. the USB port
  38. True
  39. the reset button
  40. False

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