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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 479 · 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 part of a microcontroller board brings power and code? (a) the power LED (b) the pins (c) the USB port (d) the voltage regulator
  2. 2.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a plain wall switch (c) a digital thermometer (d) a microwave oven
  3. 3.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the power LED (c) the voltage regulator (d) the pins
  4. 4.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) USB or a 9 V battery (c) a wall socket directly (d) bare mains wires
  5. 5.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a hand pump (d) a candle
  6. 6.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  7. 7.Which job is done by the pins? (a) shows the board is on (b) runs the program (c) restarts the program (d) connect sensors and LEDs
  8. 8.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the power LED (c) the main chip (d) the pins
  9. 9.Which of these has no microcontroller inside? (a) a digital thermometer (b) a digital alarm clock (c) a smart watch (d) a wind-up toy
  10. 10.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  11. 11.🤖 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
  12. 12.Which job is done by the main chip? (a) brings power and code (b) connect sensors and LEDs (c) shows the board is on (d) runs the program
  13. 13.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  14. 14.Which of these has no microcontroller inside? (a) a bicycle bell (b) a smart watch (c) a digital thermometer (d) a washing machine
  15. 15.Which job is done by the USB port? (a) connect sensors and LEDs (b) brings power and code (c) keeps the voltage steady (d) runs the program
  16. 16.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  17. 17.Which of these usually has a microcontroller inside? (a) a spinning top (b) a toy robot (c) a plain wall switch (d) a hand pump
  18. 18.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  19. 19.Which job is done by the power LED? (a) brings power and code (b) connect sensors and LEDs (c) runs the program (d) shows the board is on
  20. 20.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a computer on one chip (d) a kind of bulb
  21. 21.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a TV remote (d) a wind-up toy
  22. 22.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  23. 23.Which of these has no microcontroller inside? (a) a candle (b) a toy robot (c) a microwave oven (d) a washing machine
  24. 24.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  25. 25.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) sent by sound (d) drawn with a pen
  26. 26.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  27. 27.Which of these usually has a microcontroller inside? (a) a candle (b) a bicycle bell (c) a washing machine (d) a plain wall switch
  28. 28.Which job is done by the voltage regulator? (a) shows the board is on (b) restarts the program (c) keeps the voltage steady (d) connect sensors and LEDs
  29. 29.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  30. 30.True or false: a laptop runs one small program. (a) False (b) True
  31. 31.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  32. 32.Which job is done by the reset button? (a) restarts the program (b) connect sensors and LEDs (c) brings power and code (d) runs the program
  33. 33.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  34. 34.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  35. 35.True or false: a laptop runs many apps at once. (a) False (b) True
  36. 36.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  37. 37.True or false: a candle has no microcontroller inside. (a) False (b) True
  38. 38.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  39. 39.True or false: a laptop uses very little power. (a) False (b) True
  40. 40.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes

Answer key

  1. the USB port
  2. a plain wall switch
  3. the main chip
  4. USB or a 9 V battery
  5. a microwave oven
  6. No
  7. connect sensors and LEDs
  8. the power LED
  9. a wind-up toy
  10. laptop
  11. it starts again
  12. runs the program
  13. microcontroller
  14. a bicycle bell
  15. brings power and code
  16. No
  17. a toy robot
  18. False
  19. shows the board is on
  20. a computer on one chip
  21. a TV remote
  22. laptop
  23. a candle
  24. Yes
  25. uploaded over USB
  26. microcontroller
  27. a washing machine
  28. keeps the voltage steady
  29. False
  30. False
  31. True
  32. restarts the program
  33. False
  34. laptop
  35. True
  36. Yes
  37. True
  38. No
  39. False
  40. Yes

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