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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 179 · 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 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
  2. 2.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the power LED (c) the reset button (d) the main chip
  3. 3.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  4. 4.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the reset button (c) the voltage regulator (d) the USB port
  5. 5.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  6. 6.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  7. 7.Which of these has no microcontroller inside? (a) a TV remote (b) a digital alarm clock (c) a digital thermometer (d) a candle
  8. 8.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  9. 9.True or false: a microcontroller runs one small program. (a) False (b) True
  10. 10.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  11. 11.Which of these has no microcontroller inside? (a) a washing machine (b) a toy robot (c) a spinning top (d) a microwave oven
  12. 12.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it stops forever (d) it deletes itself
  13. 13.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) drawn with a pen (d) typed on the chip
  14. 14.Which job is done by the pins? (a) connect sensors and LEDs (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
  15. 15.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  16. 16.True or false: a candle has no microcontroller inside. (a) True (b) False
  17. 17.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the reset button (c) the power LED (d) the pins
  18. 18.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  19. 19.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a candle (d) a toy robot
  20. 20.Which job is done by the reset button? (a) runs the program (b) brings power and code (c) restarts the program (d) keeps the voltage steady
  21. 21.Which of these usually has a microcontroller inside? (a) a candle (b) a bicycle bell (c) a spinning top (d) a washing machine
  22. 22.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  23. 23.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  24. 24.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the USB port (c) the voltage regulator (d) the reset button
  25. 25.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  26. 26.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  27. 27.🤖 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
  28. 28.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  29. 29.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  30. 30.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
  31. 31.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a digital alarm clock (d) a plain wall switch
  32. 32.Which of these has no microcontroller inside? (a) a smart watch (b) a plain wall switch (c) a digital thermometer (d) a digital alarm clock
  33. 33.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  34. 34.True or false: a microcontroller has no screen of its own. (a) False (b) True
  35. 35.Which of these usually has a microcontroller inside? (a) a smart watch (b) a hand pump (c) a candle (d) a wind-up toy
  36. 36.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  37. 37.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  38. 38.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  39. 39.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a wind-up toy (d) a smart watch
  40. 40.True or false: a laptop has a built-in keyboard. (a) True (b) False

Answer key

  1. USB or a 9 V battery
  2. the main chip
  3. True
  4. the voltage regulator
  5. True
  6. Yes
  7. a candle
  8. True
  9. True
  10. False
  11. a spinning top
  12. it starts again
  13. uploaded over USB
  14. connect sensors and LEDs
  15. False
  16. True
  17. the reset button
  18. Yes
  19. a toy robot
  20. restarts the program
  21. a washing machine
  22. No
  23. True
  24. the pins
  25. No
  26. True
  27. flash memory
  28. laptop
  29. microcontroller
  30. brings power and code
  31. a digital alarm clock
  32. a plain wall switch
  33. laptop
  34. True
  35. a smart watch
  36. Yes
  37. microcontroller
  38. No
  39. a wind-up toy
  40. True

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