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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 525 · 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.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  2. 2.Which of these has no microcontroller inside? (a) a microwave oven (b) a bicycle bell (c) a digital alarm clock (d) a digital thermometer
  3. 3.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the USB port (c) the reset button (d) the pins
  4. 4.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) USB or a 9 V battery (d) a wall socket directly
  5. 5.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  6. 6.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a plain wall switch (c) a hand pump (d) a bicycle bell
  7. 7.True or false: a microcontroller runs one small program. (a) True (b) False
  8. 8.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) it deletes itself (d) the board breaks
  9. 9.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  10. 10.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  11. 11.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  12. 12.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the voltage regulator (c) the USB port (d) the pins
  13. 13.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  14. 14.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the pins (c) the voltage regulator (d) the USB port
  15. 15.True or false: a laptop runs one small program. (a) True (b) False
  16. 16.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  17. 17.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  18. 18.Which of these usually has a microcontroller inside? (a) a candle (b) a washing machine (c) a spinning top (d) a hand pump
  19. 19.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a plain wall switch (d) a TV remote
  20. 20.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a wind-up toy (d) a washing machine
  21. 21.Which job is done by the USB port? (a) runs the program (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  22. 22.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  23. 23.Which job is done by the pins? (a) shows the board is on (b) brings power and code (c) runs the program (d) connect sensors and LEDs
  24. 24.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  25. 25.Which job is done by the power LED? (a) restarts the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) shows the board is on
  26. 26.True or false: a microcontroller has no screen of its own. (a) False (b) True
  27. 27.Which job is done by the reset button? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) shows the board is on
  28. 28.Which job is done by the main chip? (a) brings power and code (b) restarts the program (c) runs the program (d) keeps the voltage steady
  29. 29.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  30. 30.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  31. 31.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) restarts the program (c) keeps the voltage steady (d) brings power and code
  32. 32.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the resistor (d) the USB cable
  33. 33.True or false: a microcontroller needs much more power. (a) True (b) False
  34. 34.True or false: a microcontroller uses very little power. (a) False (b) True
  35. 35.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  36. 36.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  37. 37.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the reset button (c) the USB port (d) the voltage regulator
  38. 38.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  39. 39.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  40. 40.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True

Answer key

  1. Yes
  2. a bicycle bell
  3. the USB port
  4. USB or a 9 V battery
  5. Yes
  6. a digital alarm clock
  7. True
  8. it starts again
  9. microcontroller
  10. laptop
  11. Yes
  12. the pins
  13. Yes
  14. the voltage regulator
  15. False
  16. No
  17. No
  18. a washing machine
  19. a TV remote
  20. a wind-up toy
  21. brings power and code
  22. No
  23. connect sensors and LEDs
  24. microcontroller
  25. shows the board is on
  26. True
  27. restarts the program
  28. runs the program
  29. True
  30. No
  31. keeps the voltage steady
  32. flash memory
  33. False
  34. True
  35. laptop
  36. False
  37. the reset button
  38. False
  39. False
  40. False

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