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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 91 · 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 is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a wall socket directly (d) a 230 V cable
  2. 2.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  3. 3.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) drawn with a pen (d) uploaded over USB
  4. 4.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  5. 5.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  6. 6.True or false: a laptop has no screen of its own. (a) True (b) False
  7. 7.True or false: a candle has no microcontroller inside. (a) True (b) False
  8. 8.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  9. 9.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  10. 10.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a washing machine (c) a candle (d) a wind-up toy
  11. 11.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the main chip (c) the pins (d) the USB port
  12. 12.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a spinning top (c) a toy robot (d) a candle
  13. 13.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  14. 14.Which of these has no microcontroller inside? (a) a digital thermometer (b) a spinning top (c) a toy robot (d) a digital alarm clock
  15. 15.True or false: a laptop needs much more power. (a) True (b) False
  16. 16.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  17. 17.Which job is done by the main chip? (a) brings power and code (b) runs the program (c) keeps the voltage steady (d) shows the board is on
  18. 18.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  19. 19.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  20. 20.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  21. 21.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a hand pump (d) a plain wall switch
  22. 22.Which job is done by the voltage regulator? (a) brings power and code (b) shows the board is on (c) connect sensors and LEDs (d) keeps the voltage steady
  23. 23.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital thermometer (c) a wind-up toy (d) a plain wall switch
  24. 24.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) the board breaks (d) it starts again
  25. 25.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the reset button (c) the power LED (d) the voltage regulator
  26. 26.Which job is done by the USB port? (a) keeps the voltage steady (b) restarts the program (c) brings power and code (d) runs the program
  27. 27.Which of these has no microcontroller inside? (a) a TV remote (b) a hand pump (c) a smart watch (d) a digital alarm clock
  28. 28.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the USB port (c) the reset button (d) the main chip
  29. 29.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  30. 30.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  31. 31.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a TV remote (d) a candle
  32. 32.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the USB port (c) the voltage regulator (d) the power LED
  33. 33.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  34. 34.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  35. 35.True or false: a laptop has a built-in keyboard. (a) False (b) True
  36. 36.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  37. 37.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  38. 38.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  39. 39.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  40. 40.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False

Answer key

  1. USB or a 9 V battery
  2. True
  3. uploaded over USB
  4. microcontroller
  5. laptop
  6. False
  7. True
  8. No
  9. laptop
  10. a washing machine
  11. the USB port
  12. a toy robot
  13. True
  14. a spinning top
  15. True
  16. True
  17. runs the program
  18. False
  19. Yes
  20. No
  21. a microwave oven
  22. keeps the voltage steady
  23. a digital thermometer
  24. it starts again
  25. the voltage regulator
  26. brings power and code
  27. a hand pump
  28. the main chip
  29. No
  30. True
  31. a TV remote
  32. the pins
  33. Yes
  34. False
  35. True
  36. No
  37. microcontroller
  38. No
  39. False
  40. False

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