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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 754 · 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 shows the board is on? (a) the USB port (b) the reset button (c) the voltage regulator (d) the power LED
  2. 2.Which of these usually has a microcontroller inside? (a) a toy robot (b) a hand pump (c) a plain wall switch (d) a wind-up toy
  3. 3.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  4. 4.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a spinning top (c) a microwave oven (d) a candle
  5. 5.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  6. 6.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  7. 7.Which job is done by the reset button? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) restarts the program
  8. 8.True or false: a microcontroller has no screen of its own. (a) True (b) False
  9. 9.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  10. 10.True or false: a laptop has a built-in keyboard. (a) True (b) False
  11. 11.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  12. 12.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the main chip (c) the pins (d) the USB port
  13. 13.True or false: a microcontroller runs one small program. (a) False (b) True
  14. 14.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a smart watch (d) a candle
  15. 15.Which job is done by the power LED? (a) restarts the program (b) connect sensors and LEDs (c) shows the board is on (d) runs the program
  16. 16.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the reset button (c) the USB port (d) the voltage regulator
  17. 17.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  18. 18.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  19. 19.Which job is done by the voltage regulator? (a) restarts the program (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
  20. 20.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) drawn with a pen (c) sent by sound (d) typed on the chip
  21. 21.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the main chip (c) the reset button (d) the voltage regulator
  22. 22.True or false: a microcontroller uses very little power. (a) False (b) True
  23. 23.Which of these has no microcontroller inside? (a) a microwave oven (b) a washing machine (c) a digital thermometer (d) a wind-up toy
  24. 24.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  25. 25.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it starts again (d) it stops forever
  26. 26.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  27. 27.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a spinning top (d) a microwave oven
  28. 28.Which of these usually has a microcontroller inside? (a) a candle (b) a washing machine (c) a spinning top (d) a plain wall switch
  29. 29.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  30. 30.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  31. 31.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a digital alarm clock (d) a candle
  32. 32.Which of these has no microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a toy robot (d) a washing machine
  33. 33.🤖 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
  34. 34.True or false: a laptop needs much more power. (a) False (b) True
  35. 35.Which job is done by the pins? (a) runs the program (b) brings power and code (c) connect sensors and LEDs (d) restarts the program
  36. 36.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  37. 37.Which job is done by the USB port? (a) restarts the program (b) runs the program (c) keeps the voltage steady (d) brings power and code
  38. 38.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  39. 39.True or false: a microcontroller needs much more power. (a) True (b) False
  40. 40.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop

Answer key

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

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