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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 560 · 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 plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  2. 2.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  3. 3.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  4. 4.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  5. 5.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a big desktop computer (d) a kind of bulb
  6. 6.True or false: a microcontroller runs one small program. (a) False (b) True
  7. 7.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the USB port (c) the power LED (d) the main chip
  8. 8.True or false: a laptop uses very little power. (a) False (b) True
  9. 9.True or false: a laptop has a built-in keyboard. (a) True (b) False
  10. 10.Which job is done by the power LED? (a) runs the program (b) connect sensors and LEDs (c) restarts the program (d) shows the board is on
  11. 11.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) sent by sound (d) drawn with a pen
  12. 12.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  13. 13.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it stops forever (d) it starts again
  14. 14.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  15. 15.Which of these has no microcontroller inside? (a) a washing machine (b) a plain wall switch (c) a microwave oven (d) a digital alarm clock
  16. 16.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  17. 17.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  18. 18.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  19. 19.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a bicycle bell (d) a washing machine
  20. 20.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  21. 21.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  22. 22.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  23. 23.Which job is done by the pins? (a) shows the board is on (b) brings power and code (c) runs the program (d) connect sensors and LEDs
  24. 24.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  25. 25.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the reset button (c) the main chip (d) the voltage regulator
  26. 26.Which job is done by the voltage regulator? (a) restarts the program (b) runs the program (c) keeps the voltage steady (d) brings power and code
  27. 27.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the reset button (c) the pins (d) the power LED
  28. 28.🤖 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
  29. 29.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  30. 30.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  31. 31.Which of these has no microcontroller inside? (a) a candle (b) a microwave oven (c) a washing machine (d) a digital alarm clock
  32. 32.Which job is done by the USB port? (a) connect sensors and LEDs (b) brings power and code (c) keeps the voltage steady (d) restarts the program
  33. 33.True or false: a laptop needs much more power. (a) True (b) False
  34. 34.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  35. 35.True or false: a candle has no microcontroller inside. (a) True (b) False
  36. 36.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  37. 37.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  38. 38.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a microwave oven (d) a candle
  39. 39.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  40. 40.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the reset button (c) the main chip (d) the USB port

Answer key

  1. No
  2. True
  3. True
  4. True
  5. a computer on one chip
  6. True
  7. the USB port
  8. False
  9. True
  10. shows the board is on
  11. uploaded over USB
  12. False
  13. it starts again
  14. Yes
  15. a plain wall switch
  16. microcontroller
  17. False
  18. microcontroller
  19. a washing machine
  20. False
  21. False
  22. No
  23. connect sensors and LEDs
  24. laptop
  25. the main chip
  26. keeps the voltage steady
  27. the pins
  28. USB or a 9 V battery
  29. True
  30. microcontroller
  31. a candle
  32. brings power and code
  33. True
  34. Yes
  35. True
  36. False
  37. True
  38. a microwave oven
  39. True
  40. the reset button

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