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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 689 · 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 spinning top usually have a microcontroller inside? (a) No (b) Yes
  2. 2.Which of these has no microcontroller inside? (a) a smart watch (b) a digital thermometer (c) a washing machine (d) a plain wall switch
  3. 3.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  4. 4.Which job is done by the voltage regulator? (a) shows the board is on (b) keeps the voltage steady (c) connect sensors and LEDs (d) restarts the program
  5. 5.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) bare mains wires (d) USB or a 9 V battery
  6. 6.True or false: a laptop runs one small program. (a) True (b) False
  7. 7.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  8. 8.🤖 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
  9. 9.Which of these has no microcontroller inside? (a) a hand pump (b) a TV remote (c) a washing machine (d) a smart watch
  10. 10.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a digital alarm clock (d) a plain wall switch
  11. 11.True or false: a laptop has no screen of its own. (a) False (b) True
  12. 12.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a bicycle bell (d) a TV remote
  13. 13.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  14. 14.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) it stops forever (d) the board breaks
  15. 15.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) drawn with a pen (d) uploaded over USB
  16. 16.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  17. 17.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a washing machine (c) a plain wall switch (d) a candle
  18. 18.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the main chip (c) the pins (d) the voltage regulator
  19. 19.True or false: a microcontroller uses very little power. (a) True (b) False
  20. 20.Which job is done by the reset button? (a) restarts the program (b) brings power and code (c) keeps the voltage steady (d) runs the program
  21. 21.True or false: a microcontroller needs much more power. (a) False (b) True
  22. 22.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the power LED (c) the voltage regulator (d) the reset button
  23. 23.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  24. 24.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  25. 25.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  26. 26.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a candle (c) a spinning top (d) a hand pump
  27. 27.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  28. 28.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  29. 29.True or false: a microcontroller has no screen of its own. (a) False (b) True
  30. 30.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  31. 31.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a big desktop computer (d) a computer on one chip
  32. 32.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the USB port (c) the power LED (d) the reset button
  33. 33.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  34. 34.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  35. 35.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the reset button (c) the USB port (d) the power LED
  36. 36.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  37. 37.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  38. 38.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the pins (c) the USB port (d) the power LED
  39. 39.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  40. 40.True or false: a laptop needs much more power. (a) False (b) True

Answer key

  1. No
  2. a plain wall switch
  3. Yes
  4. keeps the voltage steady
  5. USB or a 9 V battery
  6. False
  7. True
  8. flash memory
  9. a hand pump
  10. a digital alarm clock
  11. False
  12. a TV remote
  13. Yes
  14. it starts again
  15. uploaded over USB
  16. microcontroller
  17. a washing machine
  18. the USB port
  19. True
  20. restarts the program
  21. False
  22. the voltage regulator
  23. False
  24. No
  25. laptop
  26. a digital thermometer
  27. No
  28. False
  29. True
  30. No
  31. a computer on one chip
  32. the reset button
  33. True
  34. microcontroller
  35. the pins
  36. False
  37. True
  38. the power LED
  39. laptop
  40. True

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