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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 285 · 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 job is done by the power LED? (a) keeps the voltage steady (b) connect sensors and LEDs (c) shows the board is on (d) brings power and code
  2. 2.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a hand pump (c) a spinning top (d) a toy robot
  3. 3.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  4. 4.Which of these has no microcontroller inside? (a) a digital thermometer (b) a candle (c) a TV remote (d) a microwave oven
  5. 5.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  6. 6.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the USB port (c) the power LED (d) the pins
  7. 7.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  8. 8.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  9. 9.True or false: a microcontroller needs much more power. (a) False (b) True
  10. 10.True or false: a microcontroller uses very little power. (a) False (b) True
  11. 11.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a spinning top (c) a digital thermometer (d) a wind-up toy
  12. 12.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  13. 13.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  14. 14.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  15. 15.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  16. 16.🤖 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
  17. 17.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  18. 18.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  19. 19.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the main chip (c) the USB port (d) the reset button
  20. 20.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  21. 21.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  22. 22.Which job is done by the USB port? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) shows the board is on
  23. 23.Which job is done by the pins? (a) shows the board is on (b) keeps the voltage steady (c) brings power and code (d) connect sensors and LEDs
  24. 24.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  25. 25.Which job is done by the main chip? (a) connect sensors and LEDs (b) shows the board is on (c) brings power and code (d) runs the program
  26. 26.Which of these has no microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a digital alarm clock (d) a washing machine
  27. 27.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the main chip (c) the power LED (d) the voltage regulator
  28. 28.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  29. 29.True or false: a laptop has no screen of its own. (a) False (b) True
  30. 30.Which job is done by the voltage regulator? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) connect sensors and LEDs
  31. 31.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the power LED (c) the reset button (d) the pins
  32. 32.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  33. 33.Which of these has no microcontroller inside? (a) a TV remote (b) a toy robot (c) a microwave oven (d) a plain wall switch
  34. 34.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  35. 35.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  36. 36.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a candle (d) a washing machine
  37. 37.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the pins (c) the voltage regulator (d) the USB port
  38. 38.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  39. 39.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the power LED (c) the USB port (d) the reset button
  40. 40.True or false: a spinning top has no microcontroller inside. (a) False (b) True

Answer key

  1. shows the board is on
  2. a toy robot
  3. False
  4. a candle
  5. True
  6. the USB port
  7. False
  8. Yes
  9. False
  10. True
  11. a digital thermometer
  12. False
  13. laptop
  14. Yes
  15. microcontroller
  16. it starts again
  17. laptop
  18. False
  19. the reset button
  20. Yes
  21. laptop
  22. brings power and code
  23. connect sensors and LEDs
  24. Yes
  25. runs the program
  26. a bicycle bell
  27. the main chip
  28. False
  29. False
  30. keeps the voltage steady
  31. the pins
  32. True
  33. a plain wall switch
  34. Yes
  35. microcontroller
  36. a washing machine
  37. the voltage regulator
  38. True
  39. the power LED
  40. True

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