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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 112 · 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 voltage regulator? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  2. 2.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  3. 3.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the reset button (c) the pins (d) the main chip
  4. 4.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  5. 5.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  6. 6.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  7. 7.Which of these has no microcontroller inside? (a) a smart watch (b) a microwave oven (c) a toy robot (d) a hand pump
  8. 8.True or false: a microcontroller needs much more power. (a) False (b) True
  9. 9.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the USB port (c) the main chip (d) the power LED
  10. 10.Which job is done by the reset button? (a) connect sensors and LEDs (b) keeps the voltage steady (c) restarts the program (d) runs the program
  11. 11.True or false: a laptop needs much more power. (a) True (b) False
  12. 12.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  13. 13.Which of these usually has a microcontroller inside? (a) a candle (b) a toy robot (c) a bicycle bell (d) a wind-up toy
  14. 14.Which job is done by the USB port? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) restarts the program
  15. 15.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a TV remote (d) a plain wall switch
  16. 16.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  17. 17.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the power LED (c) the reset button (d) the voltage regulator
  18. 18.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  19. 19.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  20. 20.🤖 What is a microcontroller? (a) a computer on one chip (b) a kind of bulb (c) a type of battery (d) a big desktop computer
  21. 21.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  22. 22.True or false: a laptop runs many apps at once. (a) True (b) False
  23. 23.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the power LED (c) the pins (d) the main chip
  24. 24.True or false: a microcontroller uses very little power. (a) False (b) True
  25. 25.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  26. 26.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  27. 27.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) drawn with a pen (c) typed on the chip (d) sent by sound
  28. 28.Which job is done by the power LED? (a) shows the board is on (b) brings power and code (c) restarts the program (d) runs the program
  29. 29.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a digital thermometer (d) a candle
  30. 30.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  31. 31.True or false: a laptop uses very little power. (a) False (b) True
  32. 32.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a wind-up toy (c) a plain wall switch (d) a bicycle bell
  33. 33.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) the resistor (d) flash memory
  34. 34.Which of these has no microcontroller inside? (a) a smart watch (b) a wind-up toy (c) a toy robot (d) a microwave oven
  35. 35.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) it stops forever (d) the board breaks
  36. 36.Which of these has no microcontroller inside? (a) a microwave oven (b) a smart watch (c) a candle (d) a washing machine
  37. 37.True or false: a laptop runs one small program. (a) False (b) True
  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.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  40. 40.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop

Answer key

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

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