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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 232 · 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 laptop uses very little power. (a) True (b) False
  2. 2.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a wall socket directly (d) a 230 V cable
  3. 3.Which job is done by the power LED? (a) runs the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) shows the board is on
  4. 4.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the main chip (c) the reset button (d) the voltage regulator
  5. 5.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a candle (d) a wind-up toy
  6. 6.True or false: a laptop has a built-in keyboard. (a) True (b) False
  7. 7.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  8. 8.Which job is done by the pins? (a) runs the program (b) restarts the program (c) connect sensors and LEDs (d) keeps the voltage steady
  9. 9.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a smart watch (c) a candle (d) a hand pump
  10. 10.True or false: a laptop needs much more power. (a) False (b) True
  11. 11.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a candle (c) a wind-up toy (d) a spinning top
  12. 12.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  13. 13.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) uploaded over USB (d) typed on the chip
  14. 14.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  15. 15.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  16. 16.Which job is done by the reset button? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) runs the program
  17. 17.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the reset button (c) the pins (d) the power LED
  18. 18.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  19. 19.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it starts again (d) it stops forever
  20. 20.True or false: a microcontroller needs much more power. (a) True (b) False
  21. 21.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  22. 22.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  23. 23.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  24. 24.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  25. 25.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  26. 26.True or false: a microcontroller runs one small program. (a) True (b) False
  27. 27.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  28. 28.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  29. 29.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  30. 30.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) the resistor (d) flash memory
  31. 31.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  32. 32.Which of these has no microcontroller inside? (a) a smart watch (b) a microwave oven (c) a bicycle bell (d) a digital alarm clock
  33. 33.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  34. 34.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the voltage regulator (c) the USB port (d) the pins
  35. 35.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  36. 36.Which job is done by the USB port? (a) restarts the program (b) runs the program (c) brings power and code (d) connect sensors and LEDs
  37. 37.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a plain wall switch (d) a smart watch
  38. 38.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  39. 39.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  40. 40.Which of these has no microcontroller inside? (a) a washing machine (b) a smart watch (c) a wind-up toy (d) a microwave oven

Answer key

  1. False
  2. USB or a 9 V battery
  3. shows the board is on
  4. the voltage regulator
  5. a digital thermometer
  6. True
  7. True
  8. connect sensors and LEDs
  9. a smart watch
  10. True
  11. a digital alarm clock
  12. False
  13. uploaded over USB
  14. False
  15. Yes
  16. restarts the program
  17. the reset button
  18. True
  19. it starts again
  20. False
  21. microcontroller
  22. Yes
  23. Yes
  24. Yes
  25. True
  26. True
  27. True
  28. False
  29. No
  30. flash memory
  31. True
  32. a bicycle bell
  33. False
  34. the pins
  35. No
  36. brings power and code
  37. a plain wall switch
  38. laptop
  39. Yes
  40. a wind-up toy

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