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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 323 · 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 of these usually has a microcontroller inside? (a) a candle (b) a bicycle bell (c) a washing machine (d) a plain wall switch
  2. 2.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a digital thermometer (c) a wind-up toy (d) a candle
  3. 3.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  4. 4.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  5. 5.Which job is done by the voltage regulator? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) connect sensors and LEDs
  6. 6.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  7. 7.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the USB port (c) the power LED (d) the voltage regulator
  8. 8.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the voltage regulator (c) the power LED (d) the main chip
  9. 9.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  10. 10.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  11. 11.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the reset button (c) the USB port (d) the pins
  12. 12.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  13. 13.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  14. 14.True or false: a laptop needs much more power. (a) False (b) True
  15. 15.Which of these has no microcontroller inside? (a) a plain wall switch (b) a digital alarm clock (c) a smart watch (d) a TV remote
  16. 16.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  17. 17.Which job is done by the power LED? (a) runs the program (b) shows the board is on (c) brings power and code (d) restarts the program
  18. 18.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the pins (c) the power LED (d) the USB port
  19. 19.True or false: a laptop uses very little power. (a) False (b) True
  20. 20.True or false: a microcontroller needs much more power. (a) False (b) True
  21. 21.True or false: a laptop runs many apps at once. (a) False (b) True
  22. 22.Which job is done by the reset button? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) keeps the voltage steady
  23. 23.True or false: a laptop has no screen of its own. (a) True (b) False
  24. 24.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the reset button (c) the power LED (d) the voltage regulator
  25. 25.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) sent by sound (d) drawn with a pen
  26. 26.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  27. 27.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) it starts again (d) the board breaks
  28. 28.Which of these usually has a microcontroller inside? (a) a smart watch (b) a spinning top (c) a wind-up toy (d) a candle
  29. 29.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  30. 30.Which job is done by the pins? (a) brings power and code (b) restarts the program (c) connect sensors and LEDs (d) runs the program
  31. 31.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a digital thermometer (c) a candle (d) a TV remote
  32. 32.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  33. 33.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a spinning top (d) a bicycle bell
  34. 34.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  35. 35.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) the resistor (d) flash memory
  36. 36.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  37. 37.Which of these has no microcontroller inside? (a) a washing machine (b) a TV remote (c) a spinning top (d) a digital thermometer
  38. 38.True or false: a microcontroller has no screen of its own. (a) False (b) True
  39. 39.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a TV remote (d) a wind-up toy
  40. 40.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) a 230 V cable (d) bare mains wires

Answer key

  1. a washing machine
  2. a digital thermometer
  3. True
  4. Yes
  5. keeps the voltage steady
  6. True
  7. the USB port
  8. the main chip
  9. True
  10. laptop
  11. the pins
  12. Yes
  13. False
  14. True
  15. a plain wall switch
  16. No
  17. shows the board is on
  18. the voltage regulator
  19. False
  20. False
  21. True
  22. restarts the program
  23. False
  24. the power LED
  25. uploaded over USB
  26. Yes
  27. it starts again
  28. a smart watch
  29. laptop
  30. connect sensors and LEDs
  31. a candle
  32. Yes
  33. a microwave oven
  34. microcontroller
  35. flash memory
  36. microcontroller
  37. a spinning top
  38. True
  39. a TV remote
  40. USB or a 9 V battery

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