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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 409 · 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.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  2. 2.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  3. 3.True or false: a microcontroller needs much more power. (a) False (b) True
  4. 4.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  5. 5.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the USB cable (c) the power LED (d) flash memory
  6. 6.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  7. 7.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  8. 8.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a washing machine (d) a spinning top
  9. 9.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital alarm clock (c) a bicycle bell (d) a spinning top
  10. 10.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  11. 11.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the pins (c) the power LED (d) the USB port
  12. 12.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  13. 13.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  14. 14.Which of these has no microcontroller inside? (a) a wind-up toy (b) a smart watch (c) a microwave oven (d) a digital thermometer
  15. 15.Which job is done by the USB port? (a) brings power and code (b) restarts the program (c) shows the board is on (d) connect sensors and LEDs
  16. 16.🧭 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 pins
  17. 17.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  18. 18.Which of these has no microcontroller inside? (a) a bicycle bell (b) a TV remote (c) a toy robot (d) a digital alarm clock
  19. 19.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  20. 20.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  21. 21.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) a wall socket directly (d) USB or a 9 V battery
  22. 22.True or false: a laptop runs many apps at once. (a) True (b) False
  23. 23.Which job is done by the pins? (a) runs the program (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
  24. 24.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  25. 25.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  26. 26.True or false: a candle has no microcontroller inside. (a) True (b) False
  27. 27.Which job is done by the main chip? (a) connect sensors and LEDs (b) shows the board is on (c) runs the program (d) restarts the program
  28. 28.Which of these has no microcontroller inside? (a) a digital thermometer (b) a TV remote (c) a microwave oven (d) a hand pump
  29. 29.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a TV remote (d) a bicycle bell
  30. 30.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  31. 31.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  32. 32.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  33. 33.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the main chip (c) the power LED (d) the voltage regulator
  34. 34.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  35. 35.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  36. 36.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) sent by sound (d) uploaded over USB
  37. 37.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the voltage regulator (c) the main chip (d) the reset button
  38. 38.True or false: a microcontroller uses very little power. (a) True (b) False
  39. 39.True or false: a laptop has no screen of its own. (a) True (b) False
  40. 40.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the USB port (c) the reset button (d) the voltage regulator

Answer key

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

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