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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 151 · 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 runs the program? (a) the USB port (b) the main chip (c) the reset button (d) the voltage regulator
  2. 2.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the USB port (c) the main chip (d) the power LED
  3. 3.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  4. 4.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  5. 5.Which job is done by the voltage regulator? (a) runs the program (b) brings power and code (c) keeps the voltage steady (d) restarts the program
  6. 6.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  7. 7.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a digital alarm clock (d) a plain wall switch
  8. 8.True or false: a laptop runs one small program. (a) False (b) True
  9. 9.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the voltage regulator (c) the main chip (d) the pins
  10. 10.Which of these usually has a microcontroller inside? (a) a candle (b) a bicycle bell (c) a digital alarm clock (d) a wind-up toy
  11. 11.Which of these usually has a microcontroller inside? (a) a smart watch (b) a candle (c) a wind-up toy (d) a spinning top
  12. 12.Which job is done by the USB port? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) connect sensors and LEDs
  13. 13.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  14. 14.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  15. 15.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the power LED (c) the pins (d) the reset button
  16. 16.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  17. 17.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  18. 18.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) the board breaks (d) it deletes itself
  19. 19.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  20. 20.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  21. 21.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  22. 22.Which of these has no microcontroller inside? (a) a candle (b) a digital thermometer (c) a washing machine (d) a smart watch
  23. 23.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a smart watch (d) a bicycle bell
  24. 24.True or false: a microcontroller runs one small program. (a) True (b) False
  25. 25.Which of these has no microcontroller inside? (a) a TV remote (b) a wind-up toy (c) a smart watch (d) a microwave oven
  26. 26.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a microwave oven (d) a bicycle bell
  27. 27.True or false: a laptop uses very little power. (a) True (b) False
  28. 28.Which job is done by the pins? (a) restarts the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) runs the program
  29. 29.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  30. 30.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  31. 31.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  32. 32.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  33. 33.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the voltage regulator (c) the pins (d) the main chip
  34. 34.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the reset button (c) the voltage regulator (d) the main chip
  35. 35.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the resistor (d) the USB cable
  36. 36.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) uploaded over USB (d) typed on the chip
  37. 37.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  38. 38.Which job is done by the reset button? (a) keeps the voltage steady (b) brings power and code (c) shows the board is on (d) restarts the program
  39. 39.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a toy robot (d) a candle
  40. 40.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) USB or a 9 V battery (d) a 230 V cable

Answer key

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

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