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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 392 · 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.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) flash memory (d) the USB cable
  2. 2.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  3. 3.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  4. 4.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the reset button (c) the power LED (d) the voltage regulator
  5. 5.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  6. 6.True or false: a laptop uses very little power. (a) False (b) True
  7. 7.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  8. 8.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  9. 9.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the USB port (c) the voltage regulator (d) the reset button
  10. 10.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a hand pump (c) a digital alarm clock (d) a plain wall switch
  11. 11.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a TV remote (d) a wind-up toy
  12. 12.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the USB port (c) the reset button (d) the main chip
  13. 13.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  14. 14.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  15. 15.Which job is done by the power LED? (a) connect sensors and LEDs (b) runs the program (c) shows the board is on (d) keeps the voltage steady
  16. 16.Which job is done by the pins? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) restarts the program
  17. 17.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  18. 18.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the pins (c) the main chip (d) the USB port
  19. 19.Which of these has no microcontroller inside? (a) a digital thermometer (b) a TV remote (c) a digital alarm clock (d) a bicycle bell
  20. 20.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it stops forever (d) it starts again
  21. 21.Which job is done by the USB port? (a) runs the program (b) shows the board is on (c) keeps the voltage steady (d) brings power and code
  22. 22.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  23. 23.Which of these usually has a microcontroller inside? (a) a hand pump (b) a spinning top (c) a microwave oven (d) a wind-up toy
  24. 24.True or false: a laptop runs one small program. (a) False (b) True
  25. 25.True or false: a laptop runs many apps at once. (a) False (b) True
  26. 26.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  27. 27.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  28. 28.True or false: a microcontroller needs much more power. (a) True (b) False
  29. 29.True or false: a microcontroller runs one small program. (a) True (b) False
  30. 30.True or false: a microcontroller runs many apps at once. (a) True (b) False
  31. 31.True or false: a laptop has no screen of its own. (a) False (b) True
  32. 32.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) typed on the chip (c) uploaded over USB (d) drawn with a pen
  33. 33.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  34. 34.True or false: a microcontroller has no screen of its own. (a) False (b) True
  35. 35.Which job is done by the main chip? (a) connect sensors and LEDs (b) brings power and code (c) runs the program (d) shows the board is on
  36. 36.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  37. 37.True or false: a laptop needs much more power. (a) True (b) False
  38. 38.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  39. 39.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the power LED (c) the pins (d) the voltage regulator
  40. 40.Which of these has no microcontroller inside? (a) a microwave oven (b) a plain wall switch (c) a digital alarm clock (d) a toy robot

Answer key

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

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