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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 254 · 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.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  2. 2.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  3. 3.Which of these usually has a microcontroller inside? (a) a spinning top (b) a hand pump (c) a bicycle bell (d) a digital thermometer
  4. 4.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  5. 5.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  6. 6.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  7. 7.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  8. 8.🤖 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
  9. 9.Which job is done by the USB port? (a) restarts the program (b) connect sensors and LEDs (c) shows the board is on (d) brings power and code
  10. 10.True or false: a laptop needs much more power. (a) False (b) True
  11. 11.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  12. 12.True or false: a microcontroller uses very little power. (a) True (b) False
  13. 13.True or false: a microcontroller runs one small program. (a) False (b) True
  14. 14.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  15. 15.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the USB port (c) the main chip (d) the voltage regulator
  16. 16.Which job is done by the pins? (a) runs the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) shows the board is on
  17. 17.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  18. 18.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) a wall socket directly (d) USB or a 9 V battery
  19. 19.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  20. 20.True or false: a laptop uses very little power. (a) False (b) True
  21. 21.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a washing machine (d) a hand pump
  22. 22.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a smart watch (c) a bicycle bell (d) a plain wall switch
  23. 23.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  24. 24.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the voltage regulator (c) the main chip (d) the USB port
  25. 25.True or false: a microcontroller runs many apps at once. (a) True (b) False
  26. 26.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  27. 27.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  28. 28.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  29. 29.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  30. 30.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  31. 31.Which of these has no microcontroller inside? (a) a microwave oven (b) a candle (c) a TV remote (d) a digital alarm clock
  32. 32.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the pins (c) the reset button (d) the voltage regulator
  33. 33.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) sent by sound (d) uploaded over USB
  34. 34.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  35. 35.Which job is done by the power LED? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) keeps the voltage steady
  36. 36.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  37. 37.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  38. 38.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the power LED (c) the main chip (d) the USB port
  39. 39.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  40. 40.Which of these has no microcontroller inside? (a) a washing machine (b) a TV remote (c) a hand pump (d) a digital alarm clock

Answer key

  1. False
  2. True
  3. a digital thermometer
  4. microcontroller
  5. True
  6. No
  7. microcontroller
  8. it starts again
  9. brings power and code
  10. True
  11. Yes
  12. True
  13. True
  14. Yes
  15. the voltage regulator
  16. connect sensors and LEDs
  17. True
  18. USB or a 9 V battery
  19. Yes
  20. False
  21. a washing machine
  22. a smart watch
  23. No
  24. the power LED
  25. False
  26. False
  27. laptop
  28. False
  29. No
  30. Yes
  31. a candle
  32. the pins
  33. uploaded over USB
  34. False
  35. shows the board is on
  36. Yes
  37. microcontroller
  38. the USB port
  39. Yes
  40. a hand pump

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