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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 522 · 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.

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

Answer key

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

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