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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 132 · 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 job is done by the power LED? (a) shows the board is on (b) connect sensors and LEDs (c) keeps the voltage steady (d) brings power and code
  2. 2.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  3. 3.Which job is done by the pins? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) restarts the program
  4. 4.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) sent by sound (d) uploaded over USB
  5. 5.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the resistor (d) the USB cable
  6. 6.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the main chip (c) the pins (d) the voltage regulator
  7. 7.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  8. 8.Which job is done by the main chip? (a) keeps the voltage steady (b) shows the board is on (c) runs the program (d) connect sensors and LEDs
  9. 9.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a bicycle bell (d) a toy robot
  10. 10.Which of these has no microcontroller inside? (a) a digital thermometer (b) a candle (c) a digital alarm clock (d) a washing machine
  11. 11.True or false: a microcontroller runs one small program. (a) False (b) True
  12. 12.True or false: a microcontroller uses very little power. (a) True (b) False
  13. 13.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the reset button (c) the main chip (d) the USB port
  14. 14.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  15. 15.True or false: a laptop needs much more power. (a) False (b) True
  16. 16.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a microwave oven (c) a smart watch (d) a spinning top
  17. 17.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the main chip (c) the voltage regulator (d) the power LED
  18. 18.True or false: a microcontroller needs much more power. (a) True (b) False
  19. 19.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a plain wall switch (d) a digital thermometer
  20. 20.Which job is done by the USB port? (a) runs the program (b) brings power and code (c) restarts the program (d) connect sensors and LEDs
  21. 21.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  22. 22.Which job is done by the reset button? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) restarts the program
  23. 23.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  24. 24.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  25. 25.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  26. 26.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  27. 27.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  28. 28.Which of these has no microcontroller inside? (a) a TV remote (b) a digital alarm clock (c) a bicycle bell (d) a smart watch
  29. 29.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  30. 30.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a toy robot (c) a TV remote (d) a plain wall switch
  31. 31.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the pins (c) the USB port (d) the voltage regulator
  32. 32.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  33. 33.True or false: a laptop runs many apps at once. (a) True (b) False
  34. 34.True or false: a laptop has no screen of its own. (a) True (b) False
  35. 35.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  36. 36.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  37. 37.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it deletes itself (c) it starts again (d) the board breaks
  38. 38.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  39. 39.True or false: a microcontroller runs many apps at once. (a) False (b) True
  40. 40.Which job is done by the voltage regulator? (a) brings power and code (b) runs the program (c) keeps the voltage steady (d) restarts the program

Answer key

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

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