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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 473 · 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 of these has no microcontroller inside? (a) a microwave oven (b) a toy robot (c) a hand pump (d) a washing machine
  2. 2.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the reset button (c) the pins (d) the voltage regulator
  3. 3.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  4. 4.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  5. 5.Which of these usually has a microcontroller inside? (a) a toy robot (b) a wind-up toy (c) a hand pump (d) a candle
  6. 6.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) runs the program (d) connect sensors and LEDs
  7. 7.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the USB port (c) the power LED (d) the reset button
  8. 8.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a digital alarm clock (c) a hand pump (d) a bicycle bell
  9. 9.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) USB or a 9 V battery (d) a 230 V cable
  10. 10.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  11. 11.True or false: a laptop uses very little power. (a) False (b) True
  12. 12.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  13. 13.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a toy robot (c) a candle (d) a digital thermometer
  14. 14.True or false: a spinning top has no microcontroller inside. (a) True (b) False
  15. 15.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a TV remote (c) a bicycle bell (d) a plain wall switch
  16. 16.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  17. 17.True or false: a microcontroller needs much more power. (a) False (b) True
  18. 18.True or false: a microcontroller runs one small program. (a) False (b) True
  19. 19.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the USB port (c) the pins (d) the voltage regulator
  20. 20.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  21. 21.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a washing machine (d) a hand pump
  22. 22.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  23. 23.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the main chip (c) the voltage regulator (d) the USB port
  24. 24.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  25. 25.Which of these usually has a microcontroller inside? (a) a candle (b) a bicycle bell (c) a hand pump (d) a smart watch
  26. 26.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  27. 27.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  28. 28.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  29. 29.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  30. 30.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  31. 31.Which job is done by the USB port? (a) connect sensors and LEDs (b) brings power and code (c) shows the board is on (d) restarts the program
  32. 32.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  33. 33.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  34. 34.Which of these has no microcontroller inside? (a) a spinning top (b) a smart watch (c) a toy robot (d) a digital thermometer
  35. 35.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) flash memory (d) the power LED
  36. 36.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the USB port (c) the reset button (d) the main chip
  37. 37.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) uploaded over USB (d) drawn with a pen
  38. 38.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  39. 39.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  40. 40.🤖 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

Answer key

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

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