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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 276 · 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 toy robot (b) a digital alarm clock (c) a plain wall switch (d) a TV remote
  2. 2.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a washing machine (d) a hand pump
  3. 3.True or false: a laptop uses very little power. (a) False (b) True
  4. 4.Which job is done by the voltage regulator? (a) brings power and code (b) runs the program (c) restarts the program (d) keeps the voltage steady
  5. 5.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  6. 6.Which of these has no microcontroller inside? (a) a bicycle bell (b) a microwave oven (c) a TV remote (d) a digital alarm clock
  7. 7.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a toy robot (d) a spinning top
  8. 8.Which of these usually has a microcontroller inside? (a) a spinning top (b) a digital thermometer (c) a bicycle bell (d) a candle
  9. 9.🤖 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
  10. 10.True or false: a laptop has no screen of its own. (a) True (b) False
  11. 11.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  12. 12.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  13. 13.Which of these has no microcontroller inside? (a) a washing machine (b) a TV remote (c) a digital thermometer (d) a candle
  14. 14.Which job is done by the power LED? (a) keeps the voltage steady (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  15. 15.True or false: a microcontroller uses very little power. (a) False (b) True
  16. 16.Which job is done by the reset button? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) runs the program
  17. 17.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the reset button (c) the voltage regulator (d) the pins
  18. 18.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it deletes itself (d) it starts again
  19. 19.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  20. 20.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  21. 21.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the voltage regulator (c) the main chip (d) the USB port
  22. 22.True or false: a candle has no microcontroller inside. (a) False (b) True
  23. 23.Which of these usually has a microcontroller inside? (a) a candle (b) a smart watch (c) a plain wall switch (d) a spinning top
  24. 24.True or false: a microcontroller needs much more power. (a) True (b) False
  25. 25.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  26. 26.True or false: a laptop has a built-in keyboard. (a) False (b) True
  27. 27.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  28. 28.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  29. 29.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the power LED (c) the voltage regulator (d) the USB port
  30. 30.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  31. 31.Which job is done by the USB port? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  32. 32.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the USB cable (d) the power LED
  33. 33.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  34. 34.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a digital alarm clock (c) a bicycle bell (d) a plain wall switch
  35. 35.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  36. 36.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the USB port (c) the reset button (d) the pins
  37. 37.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  38. 38.Which of these usually has a microcontroller inside? (a) a candle (b) a bicycle bell (c) a wind-up toy (d) a microwave oven
  39. 39.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  40. 40.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop

Answer key

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

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