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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 683 · 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.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) the board breaks (d) it deletes itself
  2. 2.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) bare mains wires (d) a 230 V cable
  3. 3.Which of these has no microcontroller inside? (a) a digital thermometer (b) a smart watch (c) a washing machine (d) a plain wall switch
  4. 4.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  5. 5.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  6. 6.Which job is done by the reset button? (a) brings power and code (b) runs the program (c) connect sensors and LEDs (d) restarts the program
  7. 7.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the USB port (c) the power LED (d) the pins
  8. 8.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  9. 9.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a bicycle bell (c) a toy robot (d) a washing machine
  10. 10.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  11. 11.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the USB port (c) the main chip (d) the reset button
  12. 12.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the USB port (c) the reset button (d) the pins
  13. 13.True or false: a candle has no microcontroller inside. (a) False (b) True
  14. 14.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  15. 15.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  16. 16.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  17. 17.Which of these usually has a microcontroller inside? (a) a washing machine (b) a spinning top (c) a hand pump (d) a candle
  18. 18.True or false: a microcontroller needs much more power. (a) False (b) True
  19. 19.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  20. 20.Which of these usually has a microcontroller inside? (a) a TV remote (b) a bicycle bell (c) a wind-up toy (d) a plain wall switch
  21. 21.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital alarm clock (c) a hand pump (d) a spinning top
  22. 22.True or false: a microcontroller has no screen of its own. (a) False (b) True
  23. 23.True or false: a microcontroller runs one small program. (a) False (b) True
  24. 24.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  25. 25.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a digital thermometer (d) a candle
  26. 26.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  27. 27.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a computer on one chip (d) a type of battery
  28. 28.Which of these has no microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a digital thermometer (d) a smart watch
  29. 29.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  30. 30.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  31. 31.True or false: a laptop uses very little power. (a) False (b) True
  32. 32.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  33. 33.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) the USB cable (d) flash memory
  34. 34.Which of these has no microcontroller inside? (a) a TV remote (b) a smart watch (c) a hand pump (d) a toy robot
  35. 35.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  36. 36.Which of these usually has a microcontroller inside? (a) a toy robot (b) a candle (c) a wind-up toy (d) a plain wall switch
  37. 37.Which of these usually has a microcontroller inside? (a) a smart watch (b) a spinning top (c) a candle (d) a wind-up toy
  38. 38.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  39. 39.Which job is done by the main chip? (a) connect sensors and LEDs (b) runs the program (c) keeps the voltage steady (d) brings power and code
  40. 40.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the USB port (c) the pins (d) the power LED

Answer key

  1. it starts again
  2. USB or a 9 V battery
  3. a plain wall switch
  4. laptop
  5. True
  6. restarts the program
  7. the pins
  8. Yes
  9. a bicycle bell
  10. laptop
  11. the reset button
  12. the main chip
  13. True
  14. False
  15. True
  16. Yes
  17. a washing machine
  18. False
  19. No
  20. a TV remote
  21. a digital alarm clock
  22. True
  23. True
  24. microcontroller
  25. a digital thermometer
  26. False
  27. a computer on one chip
  28. a wind-up toy
  29. Yes
  30. True
  31. False
  32. Yes
  33. flash memory
  34. a hand pump
  35. Yes
  36. a toy robot
  37. a smart watch
  38. laptop
  39. runs the program
  40. the USB port

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