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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 408 · 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 has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a washing machine (d) a bicycle bell
  2. 2.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  3. 3.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  4. 4.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  5. 5.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  6. 6.Which of these has no microcontroller inside? (a) a washing machine (b) a digital thermometer (c) a TV remote (d) a hand pump
  7. 7.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  8. 8.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  9. 9.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital thermometer (c) a smart watch (d) a candle
  10. 10.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the voltage regulator (c) the pins (d) the USB port
  11. 11.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the power LED (c) the voltage regulator (d) the main chip
  12. 12.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  13. 13.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the main chip (c) the power LED (d) the reset button
  14. 14.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  15. 15.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) flash memory (d) the USB cable
  16. 16.Which job is done by the USB port? (a) keeps the voltage steady (b) connect sensors and LEDs (c) restarts the program (d) brings power and code
  17. 17.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  18. 18.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  19. 19.True or false: a laptop has a built-in keyboard. (a) True (b) False
  20. 20.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  21. 21.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  22. 22.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  23. 23.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the pins (c) the voltage regulator (d) the power LED
  24. 24.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  25. 25.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  26. 26.Which job is done by the main chip? (a) runs the program (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  27. 27.🤖 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
  28. 28.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a candle (d) a smart watch
  29. 29.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  30. 30.True or false: a laptop runs many apps at once. (a) False (b) True
  31. 31.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the USB port (c) the pins (d) the voltage regulator
  32. 32.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  33. 33.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the pins (c) the USB port (d) the main chip
  34. 34.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  35. 35.True or false: a laptop runs one small program. (a) False (b) True
  36. 36.Which job is done by the voltage regulator? (a) runs the program (b) shows the board is on (c) connect sensors and LEDs (d) keeps the voltage steady
  37. 37.True or false: a microcontroller uses very little power. (a) True (b) False
  38. 38.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
  39. 39.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a digital alarm clock (d) a wind-up toy
  40. 40.True or false: a microcontroller runs one small program. (a) True (b) False

Answer key

  1. a bicycle bell
  2. False
  3. microcontroller
  4. Yes
  5. True
  6. a hand pump
  7. microcontroller
  8. Yes
  9. a candle
  10. the USB port
  11. the power LED
  12. False
  13. the main chip
  14. laptop
  15. flash memory
  16. brings power and code
  17. False
  18. No
  19. True
  20. False
  21. False
  22. Yes
  23. the pins
  24. No
  25. True
  26. runs the program
  27. uploaded over USB
  28. a smart watch
  29. microcontroller
  30. True
  31. the voltage regulator
  32. False
  33. the reset button
  34. No
  35. False
  36. keeps the voltage steady
  37. True
  38. USB or a 9 V battery
  39. a digital alarm clock
  40. True

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