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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 65 · 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) USB or a 9 V battery (b) bare mains wires (c) a wall socket directly (d) a 230 V cable
  2. 2.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it deletes itself (d) it starts again
  3. 3.Which job is done by the power LED? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) shows the board is on
  4. 4.True or false: a microcontroller uses very little power. (a) False (b) True
  5. 5.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  6. 6.True or false: a microcontroller runs many apps at once. (a) True (b) False
  7. 7.Which of these usually has a microcontroller inside? (a) a spinning top (b) a digital alarm clock (c) a candle (d) a hand pump
  8. 8.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  9. 9.Which of these usually has a microcontroller inside? (a) a spinning top (b) a toy robot (c) a wind-up toy (d) a bicycle bell
  10. 10.True or false: a laptop needs much more power. (a) False (b) True
  11. 11.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  12. 12.Which of these has no microcontroller inside? (a) a washing machine (b) a candle (c) a toy robot (d) a TV remote
  13. 13.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the reset button (c) the USB port (d) the pins
  14. 14.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  15. 15.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the USB port (c) the reset button (d) the voltage regulator
  16. 16.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a wind-up toy (d) a digital thermometer
  17. 17.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  18. 18.Which job is done by the reset button? (a) keeps the voltage steady (b) shows the board is on (c) brings power and code (d) restarts the program
  19. 19.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a spinning top (d) a washing machine
  20. 20.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  21. 21.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  22. 22.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  23. 23.True or false: a laptop uses very little power. (a) True (b) False
  24. 24.Which of these usually has a microcontroller inside? (a) a candle (b) a smart watch (c) a plain wall switch (d) a bicycle bell
  25. 25.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) flash memory (c) the USB cable (d) the power LED
  26. 26.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  27. 27.True or false: a microcontroller needs much more power. (a) True (b) False
  28. 28.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the voltage regulator (c) the main chip (d) the USB port
  29. 29.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  30. 30.Which of these has no microcontroller inside? (a) a washing machine (b) a toy robot (c) a TV remote (d) a bicycle bell
  31. 31.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  32. 32.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  33. 33.True or false: a laptop has no screen of its own. (a) True (b) False
  34. 34.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  35. 35.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  36. 36.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  37. 37.Which job is done by the USB port? (a) restarts the program (b) brings power and code (c) runs the program (d) connect sensors and LEDs
  38. 38.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  39. 39.True or false: a laptop runs many apps at once. (a) True (b) False
  40. 40.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the power LED (c) the voltage regulator (d) the main chip

Answer key

  1. USB or a 9 V battery
  2. it starts again
  3. shows the board is on
  4. True
  5. microcontroller
  6. False
  7. a digital alarm clock
  8. laptop
  9. a toy robot
  10. True
  11. microcontroller
  12. a candle
  13. the USB port
  14. No
  15. the reset button
  16. a digital thermometer
  17. No
  18. restarts the program
  19. a spinning top
  20. Yes
  21. microcontroller
  22. Yes
  23. False
  24. a smart watch
  25. flash memory
  26. False
  27. False
  28. the voltage regulator
  29. Yes
  30. a bicycle bell
  31. False
  32. False
  33. False
  34. Yes
  35. False
  36. True
  37. brings power and code
  38. True
  39. True
  40. the main chip

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