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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 31 · 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.

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

Answer key

  1. True
  2. it starts again
  3. a microwave oven
  4. No
  5. shows the board is on
  6. Yes
  7. False
  8. the power LED
  9. True
  10. True
  11. microcontroller
  12. True
  13. False
  14. a bicycle bell
  15. a wind-up toy
  16. No
  17. Yes
  18. Yes
  19. runs the program
  20. keeps the voltage steady
  21. False
  22. a candle
  23. USB or a 9 V battery
  24. No
  25. the main chip
  26. a hand pump
  27. laptop
  28. laptop
  29. No
  30. False
  31. restarts the program
  32. flash memory
  33. False
  34. False
  35. True
  36. the reset button
  37. False
  38. the pins
  39. True
  40. True

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