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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 456 · 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 job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) brings power and code (d) connect sensors and LEDs
  2. 2.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) flash memory (d) the power LED
  3. 3.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the main chip (c) the voltage regulator (d) the power LED
  4. 4.Which job is done by the power LED? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) connect sensors and LEDs
  5. 5.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) it deletes itself (d) the board breaks
  6. 6.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  7. 7.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  8. 8.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  9. 9.True or false: a microcontroller uses very little power. (a) False (b) True
  10. 10.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  11. 11.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  12. 12.Which of these has no microcontroller inside? (a) a microwave oven (b) a smart watch (c) a plain wall switch (d) a digital thermometer
  13. 13.Which of these usually has a microcontroller inside? (a) a spinning top (b) a TV remote (c) a bicycle bell (d) a plain wall switch
  14. 14.Which of these has no microcontroller inside? (a) a wind-up toy (b) a TV remote (c) a microwave oven (d) a digital thermometer
  15. 15.True or false: a laptop has a built-in keyboard. (a) False (b) True
  16. 16.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  17. 17.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  18. 18.Which of these has no microcontroller inside? (a) a washing machine (b) a digital alarm clock (c) a hand pump (d) a microwave oven
  19. 19.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  20. 20.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  21. 21.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  22. 22.Which job is done by the USB port? (a) brings power and code (b) connect sensors and LEDs (c) shows the board is on (d) runs the program
  23. 23.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  24. 24.True or false: a microcontroller needs much more power. (a) False (b) True
  25. 25.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  26. 26.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  27. 27.Which job is done by the pins? (a) brings power and code (b) connect sensors and LEDs (c) runs the program (d) keeps the voltage steady
  28. 28.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a hand pump (c) a smart watch (d) a candle
  29. 29.Which of these usually has a microcontroller inside? (a) a washing machine (b) a candle (c) a wind-up toy (d) a hand pump
  30. 30.True or false: a microcontroller has no screen of its own. (a) False (b) True
  31. 31.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a bicycle bell (d) a washing machine
  32. 32.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  33. 33.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the pins (c) the voltage regulator (d) the power LED
  34. 34.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  35. 35.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the voltage regulator (c) the reset button (d) the main chip
  36. 36.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  37. 37.True or false: a laptop has no screen of its own. (a) False (b) True
  38. 38.Which job is done by the reset button? (a) shows the board is on (b) connect sensors and LEDs (c) runs the program (d) restarts the program
  39. 39.🤖 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
  40. 40.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the voltage regulator (c) the reset button (d) the power LED

Answer key

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

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