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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 291 · 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 pins? (a) runs the program (b) shows the board is on (c) restarts the program (d) connect sensors and LEDs
  2. 2.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) the power LED (d) flash memory
  3. 3.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  4. 4.Which job is done by the reset button? (a) runs the program (b) restarts the program (c) shows the board is on (d) connect sensors and LEDs
  5. 5.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  6. 6.Which job is done by the power LED? (a) shows the board is on (b) runs the program (c) brings power and code (d) keeps the voltage steady
  7. 7.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  8. 8.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the power LED (c) the USB port (d) the reset button
  9. 9.Which of these has no microcontroller inside? (a) a microwave oven (b) a bicycle bell (c) a digital thermometer (d) a digital alarm clock
  10. 10.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a kind of bulb (d) a computer on one chip
  11. 11.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the voltage regulator (c) the pins (d) the USB port
  12. 12.True or false: a microcontroller has no screen of its own. (a) True (b) False
  13. 13.True or false: a microcontroller needs much more power. (a) False (b) True
  14. 14.Which of these has no microcontroller inside? (a) a smart watch (b) a microwave oven (c) a wind-up toy (d) a washing machine
  15. 15.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  16. 16.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the reset button (c) the pins (d) the voltage regulator
  17. 17.Which of these usually has a microcontroller inside? (a) a hand pump (b) a bicycle bell (c) a microwave oven (d) a candle
  18. 18.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  19. 19.True or false: a laptop uses very little power. (a) True (b) False
  20. 20.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  21. 21.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  22. 22.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the voltage regulator (c) the USB port (d) the pins
  23. 23.True or false: a laptop has no screen of its own. (a) False (b) True
  24. 24.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) a wall socket directly (d) bare mains wires
  25. 25.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the USB port (c) the main chip (d) the power LED
  26. 26.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a spinning top (c) a wind-up toy (d) a TV remote
  27. 27.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  28. 28.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital alarm clock (c) a wind-up toy (d) a candle
  29. 29.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  30. 30.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  31. 31.True or false: a candle has no microcontroller inside. (a) True (b) False
  32. 32.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  33. 33.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the main chip (c) the pins (d) the voltage regulator
  34. 34.🤖 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
  35. 35.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
  36. 36.Which of these has no microcontroller inside? (a) a toy robot (b) a smart watch (c) a plain wall switch (d) a digital thermometer
  37. 37.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  38. 38.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  39. 39.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  40. 40.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a bicycle bell (d) a toy robot

Answer key

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

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