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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 627 · 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 runs the program? (a) the reset button (b) the USB port (c) the pins (d) the main chip
  2. 2.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  3. 3.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  4. 4.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  5. 5.Which job is done by the main chip? (a) keeps the voltage steady (b) restarts the program (c) runs the program (d) brings power and code
  6. 6.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the USB port (c) the power LED (d) the pins
  7. 7.🤖 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
  8. 8.Which job is done by the USB port? (a) shows the board is on (b) keeps the voltage steady (c) runs the program (d) brings power and code
  9. 9.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it starts again (d) it deletes itself
  10. 10.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  11. 11.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  12. 12.Which job is done by the reset button? (a) brings power and code (b) runs the program (c) keeps the voltage steady (d) restarts the program
  13. 13.True or false: a laptop has a built-in keyboard. (a) False (b) True
  14. 14.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  15. 15.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  16. 16.True or false: a laptop needs much more power. (a) True (b) False
  17. 17.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a washing machine (d) a spinning top
  18. 18.Which of these usually has a microcontroller inside? (a) a candle (b) a digital alarm clock (c) a plain wall switch (d) a spinning top
  19. 19.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  20. 20.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  21. 21.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  22. 22.Which of these has no microcontroller inside? (a) a toy robot (b) a smart watch (c) a TV remote (d) a plain wall switch
  23. 23.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  24. 24.Which of these has no microcontroller inside? (a) a TV remote (b) a smart watch (c) a toy robot (d) a wind-up toy
  25. 25.Which of these usually has a microcontroller inside? (a) a toy robot (b) a hand pump (c) a wind-up toy (d) a bicycle bell
  26. 26.True or false: a laptop uses very little power. (a) False (b) True
  27. 27.True or false: a laptop has no screen of its own. (a) False (b) True
  28. 28.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  29. 29.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) connect sensors and LEDs (d) restarts the program
  30. 30.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  31. 31.🤖 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
  32. 32.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  33. 33.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  34. 34.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  35. 35.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  36. 36.Which of these has no microcontroller inside? (a) a TV remote (b) a spinning top (c) a digital alarm clock (d) a washing machine
  37. 37.Which of these has no microcontroller inside? (a) a TV remote (b) a smart watch (c) a hand pump (d) a digital thermometer
  38. 38.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the reset button (c) the power LED (d) the pins
  39. 39.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  40. 40.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No

Answer key

  1. the main chip
  2. False
  3. No
  4. False
  5. runs the program
  6. the USB port
  7. USB or a 9 V battery
  8. brings power and code
  9. it starts again
  10. microcontroller
  11. True
  12. restarts the program
  13. True
  14. laptop
  15. No
  16. True
  17. a washing machine
  18. a digital alarm clock
  19. microcontroller
  20. No
  21. laptop
  22. a plain wall switch
  23. Yes
  24. a wind-up toy
  25. a toy robot
  26. False
  27. False
  28. Yes
  29. keeps the voltage steady
  30. False
  31. uploaded over USB
  32. False
  33. Yes
  34. False
  35. False
  36. a spinning top
  37. a hand pump
  38. the power LED
  39. False
  40. Yes

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