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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 457 · 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 part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the pins (c) the voltage regulator (d) the power LED
  2. 2.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a spinning top (d) a digital thermometer
  3. 3.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) flash memory (d) the USB cable
  4. 4.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the reset button (c) the main chip (d) the USB port
  5. 5.Which job is done by the reset button? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) runs the program
  6. 6.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  7. 7.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  8. 8.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  9. 9.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  11. 11.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  12. 12.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  13. 13.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  14. 14.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  15. 15.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital alarm clock (c) a washing machine (d) a plain wall switch
  16. 16.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the main chip (c) the power LED (d) the USB port
  17. 17.Which job is done by the pins? (a) shows the board is on (b) connect sensors and LEDs (c) restarts the program (d) keeps the voltage steady
  18. 18.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
  19. 19.True or false: a candle has no microcontroller inside. (a) True (b) False
  20. 20.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a hand pump (c) a TV remote (d) a candle
  21. 21.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a computer on one chip (d) a type of battery
  22. 22.Which job is done by the power LED? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  23. 23.Which of these usually has a microcontroller inside? (a) a candle (b) a microwave oven (c) a bicycle bell (d) a hand pump
  24. 24.True or false: a laptop has a built-in keyboard. (a) True (b) False
  25. 25.Which of these has no microcontroller inside? (a) a TV remote (b) a smart watch (c) a bicycle bell (d) a digital alarm clock
  26. 26.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  27. 27.True or false: a microcontroller uses very little power. (a) True (b) False
  28. 28.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  29. 29.True or false: a microcontroller runs one small program. (a) False (b) True
  30. 30.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  31. 31.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  32. 32.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) it stops forever (d) the board breaks
  33. 33.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a washing machine (d) a plain wall switch
  34. 34.Which of these has no microcontroller inside? (a) a smart watch (b) a digital thermometer (c) a toy robot (d) a wind-up toy
  35. 35.Which of these has no microcontroller inside? (a) a hand pump (b) a washing machine (c) a TV remote (d) a microwave oven
  36. 36.True or false: a laptop runs one small program. (a) False (b) True
  37. 37.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  38. 38.Which job is done by the main chip? (a) keeps the voltage steady (b) restarts the program (c) runs the program (d) brings power and code
  39. 39.True or false: a laptop runs many apps at once. (a) True (b) False
  40. 40.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No

Answer key

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

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