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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 587 · 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.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) it deletes itself (d) the board breaks
  2. 2.Which job is done by the reset button? (a) runs the program (b) keeps the voltage steady (c) brings power and code (d) restarts the program
  3. 3.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  4. 4.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  5. 5.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the voltage regulator (c) the power LED (d) the main chip
  6. 6.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  7. 7.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  8. 8.Which job is done by the main chip? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) shows the board is on
  9. 9.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  10. 10.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  11. 11.Which job is done by the USB port? (a) restarts the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) brings power and code
  12. 12.True or false: a laptop has a built-in keyboard. (a) True (b) False
  13. 13.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  14. 14.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  15. 15.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the USB port (c) the power LED (d) the reset button
  16. 16.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the reset button (c) the main chip (d) the USB port
  17. 17.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) flash memory (d) the power LED
  18. 18.Which of these has no microcontroller inside? (a) a digital thermometer (b) a bicycle bell (c) a microwave oven (d) a toy robot
  19. 19.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  20. 20.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  21. 21.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  22. 22.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  23. 23.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  24. 24.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  25. 25.True or false: a laptop needs much more power. (a) False (b) True
  26. 26.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  27. 27.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) connect sensors and LEDs (d) shows the board is on
  28. 28.Which of these usually has a microcontroller inside? (a) a toy robot (b) a bicycle bell (c) a spinning top (d) a hand pump
  29. 29.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  30. 30.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the reset button (c) the voltage regulator (d) the power LED
  31. 31.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  32. 32.Which of these has no microcontroller inside? (a) a toy robot (b) a digital alarm clock (c) a washing machine (d) a wind-up toy
  33. 33.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the reset button (c) the pins (d) the USB port
  34. 34.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a bicycle bell (c) a candle (d) a plain wall switch
  35. 35.True or false: a laptop runs many apps at once. (a) True (b) False
  36. 36.True or false: a laptop uses very little power. (a) True (b) False
  37. 37.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) typed on the chip (c) uploaded over USB (d) drawn with a pen
  38. 38.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a wind-up toy (c) a plain wall switch (d) a spinning top
  39. 39.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the reset button (c) the USB port (d) the voltage regulator
  40. 40.Which of these has no microcontroller inside? (a) a microwave oven (b) a plain wall switch (c) a TV remote (d) a digital thermometer

Answer key

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

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