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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 494 · 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.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  2. 2.Which job is done by the main chip? (a) connect sensors and LEDs (b) restarts the program (c) runs the program (d) keeps the voltage steady
  3. 3.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  4. 4.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  5. 5.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  6. 6.🤖 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
  7. 7.True or false: a microcontroller has no screen of its own. (a) False (b) True
  8. 8.Which of these usually has a microcontroller inside? (a) a TV remote (b) a spinning top (c) a plain wall switch (d) a candle
  9. 9.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the main chip (c) the reset button (d) the pins
  10. 10.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  11. 11.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  12. 12.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  13. 13.Which of these usually has a microcontroller inside? (a) a spinning top (b) a toy robot (c) a candle (d) a wind-up toy
  14. 14.Which of these usually has a microcontroller inside? (a) a washing machine (b) a wind-up toy (c) a plain wall switch (d) a candle
  15. 15.🤖 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
  16. 16.Which of these has no microcontroller inside? (a) a wind-up toy (b) a TV remote (c) a toy robot (d) a smart watch
  17. 17.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  18. 18.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  19. 19.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  20. 20.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the main chip (c) the voltage regulator (d) the USB port
  21. 21.True or false: a microcontroller needs much more power. (a) True (b) False
  22. 22.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the voltage regulator (c) the main chip (d) the reset button
  23. 23.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a bicycle bell (c) a wind-up toy (d) a candle
  24. 24.True or false: a microcontroller uses very little power. (a) False (b) True
  25. 25.🤖 What is a microcontroller? (a) a kind of bulb (b) a type of battery (c) a big desktop computer (d) a computer on one chip
  26. 26.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) typed on the chip (d) sent by sound
  27. 27.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  28. 28.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a washing machine (c) a candle (d) a digital thermometer
  29. 29.Which of these has no microcontroller inside? (a) a microwave oven (b) a toy robot (c) a digital thermometer (d) a plain wall switch
  30. 30.True or false: a laptop runs many apps at once. (a) True (b) False
  31. 31.True or false: a laptop uses very little power. (a) False (b) True
  32. 32.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the voltage regulator (c) the USB port (d) the power LED
  33. 33.True or false: a candle has no microcontroller inside. (a) True (b) False
  34. 34.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  35. 35.Which of these has no microcontroller inside? (a) a digital thermometer (b) a toy robot (c) a bicycle bell (d) a washing machine
  36. 36.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the USB port (c) the reset button (d) the voltage regulator
  37. 37.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  38. 38.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  39. 39.Which job is done by the reset button? (a) shows the board is on (b) runs the program (c) restarts the program (d) brings power and code
  40. 40.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True

Answer key

  1. No
  2. runs the program
  3. laptop
  4. False
  5. microcontroller
  6. USB or a 9 V battery
  7. True
  8. a TV remote
  9. the pins
  10. True
  11. No
  12. laptop
  13. a toy robot
  14. a washing machine
  15. flash memory
  16. a wind-up toy
  17. No
  18. No
  19. Yes
  20. the main chip
  21. False
  22. the voltage regulator
  23. a microwave oven
  24. True
  25. a computer on one chip
  26. uploaded over USB
  27. Yes
  28. a candle
  29. a plain wall switch
  30. True
  31. False
  32. the USB port
  33. True
  34. True
  35. a bicycle bell
  36. the reset button
  37. No
  38. True
  39. restarts the program
  40. True

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