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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 545 · 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 usually has a microcontroller inside? (a) a plain wall switch (b) a digital alarm clock (c) a spinning top (d) a hand pump
  2. 2.True or false: a candle has no microcontroller inside. (a) False (b) True
  3. 3.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  4. 4.True or false: a laptop uses very little power. (a) False (b) True
  5. 5.Which job is done by the reset button? (a) shows the board is on (b) restarts the program (c) brings power and code (d) keeps the voltage steady
  6. 6.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  7. 7.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  8. 8.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) the power LED (d) flash memory
  9. 9.Which of these usually has a microcontroller inside? (a) a hand pump (b) a bicycle bell (c) a plain wall switch (d) a washing machine
  10. 10.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the pins (c) the reset button (d) the USB port
  11. 11.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  12. 12.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  13. 13.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  14. 14.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  15. 15.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the power LED (c) the USB port (d) the voltage regulator
  16. 16.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  17. 17.🤖 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
  18. 18.Which of these has no microcontroller inside? (a) a microwave oven (b) a hand pump (c) a digital alarm clock (d) a toy robot
  19. 19.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  20. 20.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  21. 21.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the USB port (c) the reset button (d) the pins
  22. 22.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a digital thermometer (d) a candle
  23. 23.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  24. 24.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  25. 25.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  26. 26.True or false: a microcontroller uses very little power. (a) True (b) False
  27. 27.True or false: a laptop runs one small program. (a) True (b) False
  28. 28.Which job is done by the pins? (a) shows the board is on (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
  29. 29.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  30. 30.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  31. 31.Which job is done by the USB port? (a) restarts the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) brings power and code
  32. 32.Which job is done by the power LED? (a) runs the program (b) shows the board is on (c) keeps the voltage steady (d) restarts the program
  33. 33.Which job is done by the voltage regulator? (a) runs the program (b) shows the board is on (c) restarts the program (d) keeps the voltage steady
  34. 34.🤖 What is a microcontroller? (a) a computer on one chip (b) a big desktop computer (c) a type of battery (d) a kind of bulb
  35. 35.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a plain wall switch (d) a TV remote
  36. 36.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  37. 37.True or false: a microcontroller runs many apps at once. (a) False (b) True
  38. 38.True or false: a microcontroller needs much more power. (a) True (b) False
  39. 39.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  40. 40.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a hand pump (d) a smart watch

Answer key

  1. a digital alarm clock
  2. True
  3. laptop
  4. False
  5. restarts the program
  6. No
  7. True
  8. flash memory
  9. a washing machine
  10. the reset button
  11. microcontroller
  12. Yes
  13. laptop
  14. True
  15. the main chip
  16. True
  17. uploaded over USB
  18. a hand pump
  19. Yes
  20. laptop
  21. the pins
  22. a digital thermometer
  23. Yes
  24. True
  25. True
  26. True
  27. False
  28. connect sensors and LEDs
  29. False
  30. Yes
  31. brings power and code
  32. shows the board is on
  33. keeps the voltage steady
  34. a computer on one chip
  35. a TV remote
  36. False
  37. False
  38. False
  39. True
  40. a smart watch

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