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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 548 · 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 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
  2. 2.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) drawn with a pen (d) uploaded over USB
  3. 3.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it starts again (d) it stops forever
  4. 4.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the power LED (c) the pins (d) the USB port
  5. 5.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  6. 6.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  7. 7.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  8. 8.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  9. 9.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the pins (c) the power LED (d) the voltage regulator
  10. 10.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  11. 11.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  12. 12.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  13. 13.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the reset button (c) the power LED (d) the pins
  14. 14.Which of these has no microcontroller inside? (a) a washing machine (b) a digital alarm clock (c) a toy robot (d) a wind-up toy
  15. 15.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the main chip (c) the reset button (d) the voltage regulator
  16. 16.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  17. 17.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  18. 18.True or false: a laptop runs one small program. (a) True (b) False
  19. 19.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a plain wall switch (d) a washing machine
  20. 20.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  21. 21.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  22. 22.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a wind-up toy (c) a spinning top (d) a plain wall switch
  23. 23.True or false: a candle has no microcontroller inside. (a) True (b) False
  24. 24.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  25. 25.Which job is done by the pins? (a) restarts the program (b) runs the program (c) brings power and code (d) connect sensors and LEDs
  26. 26.Which of these usually has a microcontroller inside? (a) a hand pump (b) a toy robot (c) a plain wall switch (d) a bicycle bell
  27. 27.True or false: a microcontroller runs many apps at once. (a) True (b) False
  28. 28.True or false: a laptop uses very little power. (a) True (b) False
  29. 29.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  30. 30.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  31. 31.Which of these has no microcontroller inside? (a) a toy robot (b) a digital thermometer (c) a TV remote (d) a candle
  32. 32.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  33. 33.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  34. 34.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  35. 35.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  36. 36.Which job is done by the main chip? (a) shows the board is on (b) keeps the voltage steady (c) restarts the program (d) runs the program
  37. 37.True or false: a laptop needs much more power. (a) False (b) True
  38. 38.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  39. 39.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  40. 40.Which of these has no microcontroller inside? (a) a microwave oven (b) a TV remote (c) a hand pump (d) a digital alarm clock

Answer key

  1. USB or a 9 V battery
  2. uploaded over USB
  3. it starts again
  4. the pins
  5. True
  6. No
  7. False
  8. No
  9. the voltage regulator
  10. Yes
  11. Yes
  12. True
  13. the power LED
  14. a wind-up toy
  15. the USB port
  16. False
  17. Yes
  18. False
  19. a washing machine
  20. Yes
  21. No
  22. a digital thermometer
  23. True
  24. True
  25. connect sensors and LEDs
  26. a toy robot
  27. False
  28. False
  29. microcontroller
  30. True
  31. a candle
  32. microcontroller
  33. microcontroller
  34. False
  35. laptop
  36. runs the program
  37. True
  38. True
  39. laptop
  40. a hand pump

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