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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 401 · 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 connect sensors and LEDs? (a) the reset button (b) the voltage regulator (c) the pins (d) the USB port
  2. 2.True or false: a laptop runs many apps at once. (a) True (b) False
  3. 3.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  4. 4.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  5. 5.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  6. 6.True or false: a microcontroller has no screen of its own. (a) False (b) True
  7. 7.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  8. 8.Which job is done by the USB port? (a) brings power and code (b) restarts the program (c) runs the program (d) keeps the voltage steady
  9. 9.True or false: a laptop runs one small program. (a) True (b) False
  10. 10.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) typed on the chip (d) drawn with a pen
  11. 11.True or false: a laptop uses very little power. (a) False (b) True
  12. 12.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a plain wall switch (d) a digital thermometer
  13. 13.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  14. 14.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  15. 15.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a smart watch (d) a wind-up toy
  16. 16.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  17. 17.Which job is done by the pins? (a) brings power and code (b) connect sensors and LEDs (c) keeps the voltage steady (d) shows the board is on
  18. 18.True or false: a laptop has a built-in keyboard. (a) True (b) False
  19. 19.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the power LED (c) the USB port (d) the main chip
  20. 20.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  21. 21.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  22. 22.True or false: a microcontroller runs many apps at once. (a) False (b) True
  23. 23.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  24. 24.Which job is done by the reset button? (a) restarts the program (b) connect sensors and LEDs (c) runs the program (d) keeps the voltage steady
  25. 25.Which of these has no microcontroller inside? (a) a toy robot (b) a candle (c) a digital thermometer (d) a TV remote
  26. 26.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  27. 27.Which of these usually has a microcontroller inside? (a) a toy robot (b) a wind-up toy (c) a bicycle bell (d) a candle
  28. 28.Which of these has no microcontroller inside? (a) a microwave oven (b) a TV remote (c) a bicycle bell (d) a digital thermometer
  29. 29.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a kind of bulb (d) a big desktop computer
  30. 30.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  31. 31.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  32. 32.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a microwave oven (d) a bicycle bell
  33. 33.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  34. 34.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the power LED (d) the USB cable
  35. 35.True or false: a laptop needs much more power. (a) False (b) True
  36. 36.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) the board breaks (d) it deletes itself
  37. 37.Which of these has no microcontroller inside? (a) a toy robot (b) a microwave oven (c) a TV remote (d) a spinning top
  38. 38.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a washing machine (d) a plain wall switch
  39. 39.Which of these usually has a microcontroller inside? (a) a smart watch (b) a bicycle bell (c) a plain wall switch (d) a hand pump
  40. 40.Which job is done by the power LED? (a) keeps the voltage steady (b) connect sensors and LEDs (c) restarts the program (d) shows the board is on

Answer key

  1. the pins
  2. True
  3. True
  4. laptop
  5. microcontroller
  6. True
  7. microcontroller
  8. brings power and code
  9. False
  10. uploaded over USB
  11. False
  12. a digital thermometer
  13. laptop
  14. No
  15. a wind-up toy
  16. Yes
  17. connect sensors and LEDs
  18. True
  19. the power LED
  20. microcontroller
  21. No
  22. False
  23. Yes
  24. restarts the program
  25. a candle
  26. laptop
  27. a toy robot
  28. a bicycle bell
  29. a computer on one chip
  30. Yes
  31. No
  32. a microwave oven
  33. True
  34. flash memory
  35. True
  36. it starts again
  37. a spinning top
  38. a washing machine
  39. a smart watch
  40. shows the board is on

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