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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 566 · 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.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  2. 2.Which of these has no microcontroller inside? (a) a microwave oven (b) a toy robot (c) a digital alarm clock (d) a spinning top
  3. 3.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the main chip (c) the voltage regulator (d) the USB port
  4. 4.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  5. 5.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) drawn with a pen (d) typed on the chip
  6. 6.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  7. 7.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  8. 8.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  9. 9.Which job is done by the pins? (a) runs the program (b) keeps the voltage steady (c) brings power and code (d) connect sensors and LEDs
  10. 10.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  11. 11.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) bare mains wires (d) a wall socket directly
  12. 12.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it stops forever (d) it starts again
  13. 13.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  14. 14.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  15. 15.True or false: a laptop has no screen of its own. (a) False (b) True
  16. 16.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a TV remote (c) a candle (d) a digital thermometer
  17. 17.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  18. 18.Which job is done by the voltage regulator? (a) restarts the program (b) keeps the voltage steady (c) runs the program (d) connect sensors and LEDs
  19. 19.Which of these has no microcontroller inside? (a) a plain wall switch (b) a smart watch (c) a microwave oven (d) a digital thermometer
  20. 20.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  21. 21.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  22. 22.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a smart watch (d) a candle
  23. 23.Which job is done by the USB port? (a) restarts the program (b) keeps the voltage steady (c) shows the board is on (d) brings power and code
  24. 24.Which of these usually has a microcontroller inside? (a) a hand pump (b) a spinning top (c) a wind-up toy (d) a digital alarm clock
  25. 25.True or false: a laptop runs one small program. (a) True (b) False
  26. 26.True or false: a laptop needs much more power. (a) True (b) False
  27. 27.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the USB port (c) the main chip (d) the pins
  28. 28.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the pins (c) the reset button (d) the USB port
  29. 29.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  30. 30.Which of these has no microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a digital alarm clock (d) a toy robot
  31. 31.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a hand pump (c) a digital thermometer (d) a spinning top
  32. 32.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  33. 33.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a washing machine (c) a spinning top (d) a plain wall switch
  34. 34.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  35. 35.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the voltage regulator (c) the main chip (d) the power LED
  36. 36.Which job is done by the reset button? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) restarts the program
  37. 37.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  38. 38.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a hand pump (d) a microwave oven
  39. 39.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  40. 40.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False

Answer key

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

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