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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 172 · 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 shows the board is on? (a) the USB port (b) the voltage regulator (c) the power LED (d) the main chip
  2. 2.Which of these usually has a microcontroller inside? (a) a spinning top (b) a smart watch (c) a plain wall switch (d) a candle
  3. 3.Which of these has no microcontroller inside? (a) a candle (b) a washing machine (c) a toy robot (d) a digital alarm clock
  4. 4.Which of these has no microcontroller inside? (a) a toy robot (b) a digital alarm clock (c) a plain wall switch (d) a microwave oven
  5. 5.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a bicycle bell (d) a washing machine
  6. 6.Which of these has no microcontroller inside? (a) a hand pump (b) a microwave oven (c) a digital thermometer (d) a TV remote
  7. 7.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) sent by sound (d) typed on the chip
  8. 8.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  9. 9.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it deletes itself (d) it starts again
  11. 11.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  12. 12.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  13. 13.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  14. 14.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  15. 15.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  16. 16.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the power LED (c) the pins (d) the voltage regulator
  17. 17.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  18. 18.Which of these usually has a microcontroller inside? (a) a toy robot (b) a wind-up toy (c) a spinning top (d) a candle
  19. 19.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a wind-up toy (c) a candle (d) a TV remote
  20. 20.True or false: a laptop has a built-in keyboard. (a) False (b) True
  21. 21.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  22. 22.🤖 What is a microcontroller? (a) a kind of bulb (b) a computer on one chip (c) a big desktop computer (d) a type of battery
  23. 23.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  24. 24.True or false: a laptop uses very little power. (a) True (b) False
  25. 25.Which job is done by the USB port? (a) brings power and code (b) runs the program (c) keeps the voltage steady (d) restarts the program
  26. 26.True or false: a microcontroller has no screen of its own. (a) True (b) False
  27. 27.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) bare mains wires (d) USB or a 9 V battery
  28. 28.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a candle (c) a wind-up toy (d) a hand pump
  29. 29.True or false: a microcontroller needs much more power. (a) True (b) False
  30. 30.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  31. 31.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  32. 32.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a digital thermometer (d) a spinning top
  33. 33.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  34. 34.True or false: a laptop has no screen of its own. (a) True (b) False
  35. 35.True or false: a microcontroller uses very little power. (a) True (b) False
  36. 36.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the USB port (c) the voltage regulator (d) the main chip
  37. 37.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  38. 38.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) brings power and code
  39. 39.Which job is done by the reset button? (a) shows the board is on (b) runs the program (c) connect sensors and LEDs (d) restarts the program
  40. 40.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False

Answer key

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

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