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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 440 · 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 restarts the program? (a) the USB port (b) the reset button (c) the voltage regulator (d) the main chip
  2. 2.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  3. 3.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  4. 4.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  5. 5.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  6. 6.True or false: a microcontroller uses very little power. (a) True (b) False
  7. 7.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  8. 8.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  9. 9.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  10. 10.Which job is done by the reset button? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) restarts the program
  11. 11.True or false: a laptop runs many apps at once. (a) False (b) True
  12. 12.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  13. 13.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the power LED (c) the voltage regulator (d) the USB port
  14. 14.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  15. 15.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the voltage regulator (c) the pins (d) the power LED
  16. 16.Which of these usually has a microcontroller inside? (a) a hand pump (b) a bicycle bell (c) a candle (d) a digital thermometer
  17. 17.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a hand pump (c) a smart watch (d) a plain wall switch
  18. 18.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a toy robot (d) a bicycle bell
  19. 19.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  20. 20.True or false: a laptop runs one small program. (a) True (b) False
  21. 21.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  22. 22.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) USB or a 9 V battery (d) a wall socket directly
  23. 23.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) uploaded over USB (d) sent by sound
  24. 24.Which job is done by the USB port? (a) shows the board is on (b) keeps the voltage steady (c) brings power and code (d) connect sensors and LEDs
  25. 25.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a washing machine (c) a candle (d) a hand pump
  26. 26.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) the board breaks (d) it stops forever
  27. 27.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  28. 28.True or false: a microcontroller runs many apps at once. (a) True (b) False
  29. 29.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a TV remote (d) a hand pump
  30. 30.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  31. 31.🤖 What is a microcontroller? (a) a kind of bulb (b) a computer on one chip (c) a type of battery (d) a big desktop computer
  32. 32.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the reset button (c) the main chip (d) the voltage regulator
  33. 33.Which job is done by the pins? (a) restarts the program (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  34. 34.True or false: a microcontroller needs much more power. (a) False (b) True
  35. 35.True or false: a laptop has a built-in keyboard. (a) True (b) False
  36. 36.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  37. 37.Which job is done by the power LED? (a) connect sensors and LEDs (b) runs the program (c) shows the board is on (d) keeps the voltage steady
  38. 38.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the voltage regulator (c) the reset button (d) the power LED
  39. 39.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  40. 40.True or false: a laptop needs much more power. (a) False (b) True

Answer key

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

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