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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 100 · 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.

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

Answer key

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

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