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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 322 · 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 brings power and code? (a) the USB port (b) the reset button (c) the power LED (d) the pins
  2. 2.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  3. 3.Which job is done by the pins? (a) connect sensors and LEDs (b) keeps the voltage steady (c) restarts the program (d) shows the board is on
  4. 4.🤖 What is a microcontroller? (a) a big desktop computer (b) a computer on one chip (c) a type of battery (d) a kind of bulb
  5. 5.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  6. 6.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  7. 7.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  8. 8.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the voltage regulator (c) the pins (d) the USB port
  9. 9.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) uploaded over USB (d) sent by sound
  10. 10.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a microwave oven (d) a hand pump
  11. 11.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  12. 12.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the USB cable (d) the power LED
  13. 13.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  14. 14.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  15. 15.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  16. 16.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  17. 17.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the USB port (c) the power LED (d) the voltage regulator
  18. 18.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a hand pump (c) a candle (d) a digital alarm clock
  19. 19.Which of these has no microcontroller inside? (a) a candle (b) a smart watch (c) a washing machine (d) a microwave oven
  20. 20.Which job is done by the USB port? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) restarts the program
  21. 21.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  22. 22.Which job is done by the voltage regulator? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) connect sensors and LEDs
  23. 23.True or false: a microcontroller needs much more power. (a) False (b) True
  24. 24.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  25. 25.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital alarm clock (c) a wind-up toy (d) a TV remote
  26. 26.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  27. 27.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  28. 28.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  29. 29.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  30. 30.Which job is done by the main chip? (a) connect sensors and LEDs (b) restarts the program (c) runs the program (d) brings power and code
  31. 31.True or false: a laptop has a built-in keyboard. (a) False (b) True
  32. 32.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a plain wall switch (c) a smart watch (d) a candle
  33. 33.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  34. 34.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it starts again (d) it stops forever
  35. 35.True or false: a microcontroller runs many apps at once. (a) False (b) True
  36. 36.Which of these has no microcontroller inside? (a) a digital thermometer (b) a TV remote (c) a hand pump (d) a smart watch
  37. 37.True or false: a laptop uses very little power. (a) True (b) False
  38. 38.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  39. 39.True or false: a laptop has no screen of its own. (a) True (b) False
  40. 40.True or false: a microcontroller runs one small program. (a) True (b) False

Answer key

  1. the USB port
  2. No
  3. connect sensors and LEDs
  4. a computer on one chip
  5. True
  6. False
  7. Yes
  8. the voltage regulator
  9. uploaded over USB
  10. a microwave oven
  11. No
  12. flash memory
  13. False
  14. True
  15. False
  16. Yes
  17. the power LED
  18. a digital alarm clock
  19. a candle
  20. brings power and code
  21. Yes
  22. keeps the voltage steady
  23. False
  24. microcontroller
  25. a wind-up toy
  26. False
  27. microcontroller
  28. True
  29. laptop
  30. runs the program
  31. True
  32. a smart watch
  33. Yes
  34. it starts again
  35. False
  36. a hand pump
  37. False
  38. False
  39. False
  40. True

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