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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 491 · 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.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it deletes itself (d) it starts again
  2. 2.True or false: a laptop runs one small program. (a) True (b) False
  3. 3.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the pins (c) the voltage regulator (d) the main chip
  4. 4.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  5. 5.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  6. 6.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a digital thermometer (c) a bicycle bell (d) a hand pump
  7. 7.Which job is done by the pins? (a) brings power and code (b) shows the board is on (c) connect sensors and LEDs (d) keeps the voltage steady
  8. 8.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  9. 9.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  10. 10.True or false: a candle has no microcontroller inside. (a) False (b) True
  11. 11.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a plain wall switch (d) a toy robot
  12. 12.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a TV remote (c) a hand pump (d) a bicycle bell
  13. 13.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) flash memory (d) the resistor
  14. 14.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  15. 15.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  16. 16.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  17. 17.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a computer on one chip (d) a big desktop computer
  18. 18.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  19. 19.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  20. 20.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the USB port (c) the voltage regulator (d) the power LED
  21. 21.Which job is done by the power LED? (a) keeps the voltage steady (b) runs the program (c) shows the board is on (d) connect sensors and LEDs
  22. 22.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  23. 23.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  24. 24.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the voltage regulator (c) the power LED (d) the main chip
  25. 25.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  26. 26.True or false: a laptop has a built-in keyboard. (a) True (b) False
  27. 27.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  28. 28.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  29. 29.Which job is done by the USB port? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) runs the program
  30. 30.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the pins (c) the power LED (d) the voltage regulator
  31. 31.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  32. 32.Which of these has no microcontroller inside? (a) a microwave oven (b) a TV remote (c) a smart watch (d) a bicycle bell
  33. 33.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a plain wall switch (d) a digital alarm clock
  34. 34.Which job is done by the main chip? (a) brings power and code (b) shows the board is on (c) restarts the program (d) runs the program
  35. 35.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  36. 36.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  37. 37.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  38. 38.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  39. 39.Which of these has no microcontroller inside? (a) a hand pump (b) a digital alarm clock (c) a TV remote (d) a microwave oven
  40. 40.Which of these has no microcontroller inside? (a) a washing machine (b) a digital thermometer (c) a plain wall switch (d) a smart watch

Answer key

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

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