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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 329 · 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 of these has no microcontroller inside? (a) a smart watch (b) a digital thermometer (c) a microwave oven (d) a plain wall switch
  2. 2.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the voltage regulator (c) the pins (d) the main chip
  3. 3.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  4. 4.Which of these has no microcontroller inside? (a) a hand pump (b) a toy robot (c) a digital alarm clock (d) a microwave oven
  5. 5.Which of these has no microcontroller inside? (a) a digital thermometer (b) a washing machine (c) a toy robot (d) a candle
  6. 6.Which of these has no microcontroller inside? (a) a spinning top (b) a digital alarm clock (c) a toy robot (d) a microwave oven
  7. 7.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  8. 8.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the pins (c) the USB port (d) the reset button
  9. 9.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  10. 10.Which job is done by the voltage regulator? (a) runs the program (b) keeps the voltage steady (c) brings power and code (d) connect sensors and LEDs
  11. 11.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) a wall socket directly (d) bare mains wires
  12. 12.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  13. 13.Which job is done by the main chip? (a) restarts the program (b) runs the program (c) connect sensors and LEDs (d) brings power and code
  14. 14.Which of these usually has a microcontroller inside? (a) a hand pump (b) a bicycle bell (c) a candle (d) a TV remote
  15. 15.Which job is done by the pins? (a) restarts the program (b) connect sensors and LEDs (c) shows the board is on (d) keeps the voltage steady
  16. 16.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  17. 17.True or false: a laptop needs much more power. (a) True (b) False
  18. 18.Which of these usually has a microcontroller inside? (a) a spinning top (b) a digital alarm clock (c) a candle (d) a hand pump
  19. 19.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the power LED (c) the main chip (d) the USB port
  20. 20.True or false: a microcontroller needs much more power. (a) True (b) False
  21. 21.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  22. 22.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a smart watch (d) a hand pump
  23. 23.True or false: a candle has no microcontroller inside. (a) False (b) True
  24. 24.True or false: a laptop runs one small program. (a) True (b) False
  25. 25.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  26. 26.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  27. 27.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  28. 28.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  29. 29.True or false: a laptop runs many apps at once. (a) False (b) True
  30. 30.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  31. 31.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  32. 32.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a candle (d) a microwave oven
  33. 33.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  34. 34.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  35. 35.🤖 What is a microcontroller? (a) a kind of bulb (b) a type of battery (c) a computer on one chip (d) a big desktop computer
  36. 36.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it stops forever (d) it deletes itself
  37. 37.Which job is done by the reset button? (a) restarts the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) shows the board is on
  38. 38.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the voltage regulator (c) the pins (d) the power LED
  39. 39.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  40. 40.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True

Answer key

  1. a plain wall switch
  2. the pins
  3. True
  4. a hand pump
  5. a candle
  6. a spinning top
  7. Yes
  8. the USB port
  9. laptop
  10. keeps the voltage steady
  11. USB or a 9 V battery
  12. microcontroller
  13. runs the program
  14. a TV remote
  15. connect sensors and LEDs
  16. False
  17. True
  18. a digital alarm clock
  19. the main chip
  20. False
  21. True
  22. a smart watch
  23. True
  24. False
  25. No
  26. No
  27. False
  28. laptop
  29. True
  30. No
  31. microcontroller
  32. a microwave oven
  33. laptop
  34. Yes
  35. a computer on one chip
  36. it starts again
  37. restarts the program
  38. the voltage regulator
  39. Yes
  40. False

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