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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 584 · 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 job is done by the USB port? (a) restarts the program (b) brings power and code (c) shows the board is on (d) keeps the voltage steady
  2. 2.True or false: a laptop uses very little power. (a) True (b) False
  3. 3.Which of these has no microcontroller inside? (a) a toy robot (b) a wind-up toy (c) a microwave oven (d) a TV remote
  4. 4.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  5. 5.True or false: a candle has no microcontroller inside. (a) False (b) True
  6. 6.Which job is done by the reset button? (a) restarts the program (b) runs the program (c) brings power and code (d) connect sensors and LEDs
  7. 7.True or false: a laptop runs one small program. (a) False (b) True
  8. 8.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  9. 9.True or false: a microcontroller has no screen of its own. (a) False (b) True
  10. 10.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  11. 11.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) the USB cable (d) flash memory
  12. 12.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the USB port (c) the voltage regulator (d) the reset button
  13. 13.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  14. 14.Which job is done by the power LED? (a) restarts the program (b) runs the program (c) shows the board is on (d) brings power and code
  15. 15.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  16. 16.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  17. 17.Which of these has no microcontroller inside? (a) a toy robot (b) a microwave oven (c) a bicycle bell (d) a digital thermometer
  18. 18.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) the board breaks (d) it stops forever
  19. 19.Which job is done by the pins? (a) brings power and code (b) runs the program (c) connect sensors and LEDs (d) keeps the voltage steady
  20. 20.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the reset button (c) the main chip (d) the pins
  21. 21.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a candle (c) a plain wall switch (d) a spinning top
  22. 22.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  23. 23.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  24. 24.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the power LED (c) the reset button (d) the pins
  25. 25.Which of these has no microcontroller inside? (a) a microwave oven (b) a TV remote (c) a smart watch (d) a candle
  26. 26.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  27. 27.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  28. 28.True or false: a laptop has no screen of its own. (a) False (b) True
  29. 29.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) restarts the program (d) runs the program
  30. 30.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the USB port (c) the voltage regulator (d) the power LED
  31. 31.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  32. 32.True or false: a laptop needs much more power. (a) True (b) False
  33. 33.Which of these usually has a microcontroller inside? (a) a hand pump (b) a smart watch (c) a spinning top (d) a candle
  34. 34.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a hand pump (c) a digital alarm clock (d) a wind-up toy
  35. 35.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  36. 36.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a washing machine (c) a candle (d) a spinning top
  37. 37.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a wall socket directly (c) bare mains wires (d) a 230 V cable
  38. 38.True or false: a microcontroller runs one small program. (a) True (b) False
  39. 39.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  40. 40.True or false: a washing machine has no microcontroller inside. (a) True (b) False

Answer key

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

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