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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 223 · 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.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  2. 2.True or false: a laptop runs many apps at once. (a) False (b) True
  3. 3.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  4. 4.Which job is done by the pins? (a) runs the program (b) shows the board is on (c) connect sensors and LEDs (d) brings power and code
  5. 5.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the voltage regulator (c) the pins (d) the USB port
  6. 6.Which of these has no microcontroller inside? (a) a smart watch (b) a washing machine (c) a candle (d) a digital alarm clock
  7. 7.🤖 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
  8. 8.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  9. 9.True or false: a microcontroller has no screen of its own. (a) True (b) False
  10. 10.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a spinning top (d) a TV remote
  11. 11.Which of these has no microcontroller inside? (a) a digital thermometer (b) a washing machine (c) a bicycle bell (d) a TV remote
  12. 12.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the USB port (c) the power LED (d) the reset button
  13. 13.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the voltage regulator (c) the pins (d) the main chip
  14. 14.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a candle (c) a hand pump (d) a bicycle bell
  15. 15.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  16. 16.True or false: a microcontroller runs many apps at once. (a) True (b) False
  17. 17.True or false: a microcontroller needs much more power. (a) False (b) True
  18. 18.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the voltage regulator (c) the reset button (d) the USB port
  19. 19.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  20. 20.Which job is done by the power LED? (a) runs the program (b) restarts the program (c) shows the board is on (d) connect sensors and LEDs
  21. 21.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  22. 22.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  23. 23.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  24. 24.Which of these has no microcontroller inside? (a) a TV remote (b) a digital alarm clock (c) a microwave oven (d) a plain wall switch
  25. 25.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  26. 26.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a 230 V cable (d) a wall socket directly
  27. 27.Which of these has no microcontroller inside? (a) a hand pump (b) a TV remote (c) a toy robot (d) a digital alarm clock
  28. 28.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  29. 29.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the USB port (c) the reset button (d) the power LED
  30. 30.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  31. 31.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  32. 32.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the main chip (c) the power LED (d) the USB port
  33. 33.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  34. 34.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  35. 35.Which job is done by the main chip? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) runs the program
  36. 36.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  37. 37.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  38. 38.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a spinning top (c) a wind-up toy (d) a bicycle bell
  39. 39.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  40. 40.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop

Answer key

  1. Yes
  2. True
  3. True
  4. connect sensors and LEDs
  5. the power LED
  6. a candle
  7. it starts again
  8. Yes
  9. True
  10. a TV remote
  11. a bicycle bell
  12. the USB port
  13. the pins
  14. a digital thermometer
  15. Yes
  16. False
  17. False
  18. the voltage regulator
  19. False
  20. shows the board is on
  21. No
  22. microcontroller
  23. laptop
  24. a plain wall switch
  25. No
  26. USB or a 9 V battery
  27. a hand pump
  28. True
  29. the reset button
  30. laptop
  31. microcontroller
  32. the main chip
  33. Yes
  34. Yes
  35. runs the program
  36. False
  37. True
  38. a digital alarm clock
  39. laptop
  40. microcontroller

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