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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 229 · 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 TV remote (b) a digital thermometer (c) a smart watch (d) a plain wall switch
  2. 2.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the pins (c) the USB port (d) the power LED
  3. 3.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) USB or a 9 V battery (d) a 230 V cable
  4. 4.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  5. 5.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  6. 6.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  7. 7.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  8. 8.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a TV remote (c) a candle (d) a smart watch
  9. 9.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the main chip (c) the voltage regulator (d) the pins
  10. 10.Which job is done by the voltage regulator? (a) runs the program (b) restarts the program (c) keeps the voltage steady (d) brings power and code
  11. 11.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  12. 12.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the pins (c) the USB port (d) the voltage regulator
  13. 13.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the pins (c) the voltage regulator (d) the main chip
  14. 14.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  15. 15.Which job is done by the USB port? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) runs the program
  16. 16.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) uploaded over USB (d) typed on the chip
  17. 17.True or false: a microcontroller uses very little power. (a) True (b) False
  18. 18.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  19. 19.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  20. 20.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a wind-up toy (d) a microwave oven
  21. 21.Which job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) shows the board is on (d) restarts the program
  22. 22.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  23. 23.True or false: a candle has no microcontroller inside. (a) True (b) False
  24. 24.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  25. 25.Which of these has no microcontroller inside? (a) a toy robot (b) a wind-up toy (c) a washing machine (d) a microwave oven
  26. 26.True or false: a laptop runs one small program. (a) False (b) True
  27. 27.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  28. 28.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a bicycle bell (c) a wind-up toy (d) a hand pump
  29. 29.True or false: a laptop has no screen of its own. (a) True (b) False
  30. 30.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  31. 31.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  32. 32.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  33. 33.Which of these usually has a microcontroller inside? (a) a TV remote (b) a wind-up toy (c) a candle (d) a spinning top
  34. 34.🤖 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
  35. 35.Which job is done by the pins? (a) runs the program (b) brings power and code (c) keeps the voltage steady (d) connect sensors and LEDs
  36. 36.True or false: a laptop uses very little power. (a) True (b) False
  37. 37.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  38. 38.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  39. 39.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  40. 40.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes

Answer key

  1. a plain wall switch
  2. the power LED
  3. USB or a 9 V battery
  4. laptop
  5. laptop
  6. False
  7. False
  8. a candle
  9. the pins
  10. keeps the voltage steady
  11. Yes
  12. the main chip
  13. the voltage regulator
  14. False
  15. brings power and code
  16. uploaded over USB
  17. True
  18. No
  19. True
  20. a microwave oven
  21. runs the program
  22. No
  23. True
  24. No
  25. a wind-up toy
  26. False
  27. Yes
  28. a digital alarm clock
  29. False
  30. microcontroller
  31. True
  32. microcontroller
  33. a TV remote
  34. it starts again
  35. connect sensors and LEDs
  36. False
  37. microcontroller
  38. False
  39. No
  40. Yes

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