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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 680 · 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.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it starts again (d) it deletes itself
  2. 2.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a hand pump (d) a TV remote
  3. 3.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  4. 4.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  5. 5.Which job is done by the pins? (a) brings power and code (b) restarts the program (c) shows the board is on (d) connect sensors and LEDs
  6. 6.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  7. 7.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  8. 8.Which of these has no microcontroller inside? (a) a digital thermometer (b) a TV remote (c) a toy robot (d) a hand pump
  9. 9.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  10. 10.Which of these usually has a microcontroller inside? (a) a washing machine (b) a candle (c) a wind-up toy (d) a hand pump
  11. 11.🤖 Does a microwave oven 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.True or false: a laptop needs much more power. (a) False (b) True
  14. 14.True or false: a laptop uses very little power. (a) True (b) False
  15. 15.Which job is done by the reset button? (a) restarts the program (b) runs the program (c) shows the board is on (d) connect sensors and LEDs
  16. 16.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  17. 17.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  18. 18.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  19. 19.Which job is done by the main chip? (a) keeps the voltage steady (b) connect sensors and LEDs (c) runs the program (d) brings power and code
  20. 20.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the pins (c) the USB port (d) the reset button
  21. 21.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the power LED (c) the USB port (d) the main chip
  22. 22.Which of these has no microcontroller inside? (a) a smart watch (b) a bicycle bell (c) a digital thermometer (d) a washing machine
  23. 23.Which job is done by the USB port? (a) connect sensors and LEDs (b) restarts the program (c) brings power and code (d) keeps the voltage steady
  24. 24.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a smart watch (c) a candle (d) a TV remote
  25. 25.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a TV remote (c) a toy robot (d) a plain wall switch
  26. 26.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the voltage regulator (c) the USB port (d) the pins
  27. 27.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  28. 28.Which job is done by the voltage regulator? (a) restarts the program (b) keeps the voltage steady (c) shows the board is on (d) runs the program
  29. 29.True or false: a laptop runs many apps at once. (a) False (b) True
  30. 30.True or false: a microcontroller runs many apps at once. (a) False (b) True
  31. 31.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the resistor (d) the power LED
  32. 32.Which of these has no microcontroller inside? (a) a smart watch (b) a wind-up toy (c) a TV remote (d) a washing machine
  33. 33.Which of these usually has a microcontroller inside? (a) a toy robot (b) a wind-up toy (c) a hand pump (d) a spinning top
  34. 34.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  35. 35.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  36. 36.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  37. 37.Which of these usually has a microcontroller inside? (a) a spinning top (b) a microwave oven (c) a hand pump (d) a wind-up toy
  38. 38.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) typed on the chip (d) sent by sound
  39. 39.True or false: a candle has no microcontroller inside. (a) True (b) False
  40. 40.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller

Answer key

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

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