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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 529 · 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 wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  2. 2.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  3. 3.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) uploaded over USB (d) drawn with a pen
  4. 4.Which of these has no microcontroller inside? (a) a toy robot (b) a microwave oven (c) a plain wall switch (d) a smart watch
  5. 5.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a hand pump (d) a digital alarm clock
  6. 6.True or false: a microcontroller uses very little power. (a) False (b) True
  7. 7.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  8. 8.Which job is done by the main chip? (a) runs the program (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  9. 9.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the power LED (c) the pins (d) the main chip
  11. 11.True or false: a laptop needs much more power. (a) False (b) True
  12. 12.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  13. 13.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a toy robot (c) a hand pump (d) a bicycle bell
  14. 14.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) bare mains wires (d) a 230 V cable
  15. 15.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  16. 16.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  17. 17.Which job is done by the USB port? (a) keeps the voltage steady (b) brings power and code (c) runs the program (d) connect sensors and LEDs
  18. 18.Which job is done by the reset button? (a) restarts the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) shows the board is on
  19. 19.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  20. 20.True or false: a candle has no microcontroller inside. (a) True (b) False
  21. 21.Which of these has no microcontroller inside? (a) a candle (b) a digital thermometer (c) a microwave oven (d) a TV remote
  22. 22.Which of these has no microcontroller inside? (a) a TV remote (b) a toy robot (c) a wind-up toy (d) a digital alarm clock
  23. 23.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the power LED (c) the USB port (d) the pins
  24. 24.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  25. 25.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the pins (c) the main chip (d) the USB port
  26. 26.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a digital thermometer (d) a bicycle bell
  27. 27.🤖 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
  28. 28.Which of these has no microcontroller inside? (a) a washing machine (b) a toy robot (c) a hand pump (d) a microwave oven
  29. 29.Which job is done by the power LED? (a) runs the program (b) restarts the program (c) keeps the voltage steady (d) shows the board is on
  30. 30.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the voltage regulator (c) the USB port (d) the power LED
  31. 31.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  32. 32.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  33. 33.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  34. 34.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a candle (c) a plain wall switch (d) a spinning top
  35. 35.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  36. 36.Which job is done by the voltage regulator? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) shows the board is on
  37. 37.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a microwave oven (d) a candle
  38. 38.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  39. 39.True or false: a laptop uses very little power. (a) True (b) False
  40. 40.Which job is done by the pins? (a) brings power and code (b) keeps the voltage steady (c) runs the program (d) connect sensors and LEDs

Answer key

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

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