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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 561 · 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 of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a washing machine (d) a plain wall switch
  2. 2.Which of these has no microcontroller inside? (a) a toy robot (b) a digital alarm clock (c) a digital thermometer (d) a bicycle bell
  3. 3.Which job is done by the pins? (a) keeps the voltage steady (b) runs the program (c) connect sensors and LEDs (d) restarts the program
  4. 4.True or false: a microcontroller runs many apps at once. (a) True (b) False
  5. 5.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  6. 6.True or false: a microcontroller has no screen of its own. (a) True (b) False
  7. 7.🤖 What is a microcontroller? (a) a computer on one chip (b) a big desktop computer (c) a kind of bulb (d) a type of battery
  8. 8.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  9. 9.True or false: a candle has no microcontroller inside. (a) True (b) False
  10. 10.Which of these has no microcontroller inside? (a) a wind-up toy (b) a digital thermometer (c) a toy robot (d) a microwave oven
  11. 11.True or false: a laptop has no screen of its own. (a) False (b) True
  12. 12.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  13. 13.Which job is done by the USB port? (a) keeps the voltage steady (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
  14. 14.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  15. 15.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  16. 16.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  17. 17.Which job is done by the voltage regulator? (a) runs the program (b) keeps the voltage steady (c) brings power and code (d) restarts the program
  18. 18.Which job is done by the reset button? (a) connect sensors and LEDs (b) runs the program (c) restarts the program (d) shows the board is on
  19. 19.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the USB cable (d) the resistor
  20. 20.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  21. 21.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  22. 22.True or false: a microcontroller uses very little power. (a) True (b) False
  23. 23.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  24. 24.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  25. 25.Which job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) brings power and code (d) connect sensors and LEDs
  26. 26.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the main chip (c) the pins (d) the voltage regulator
  27. 27.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  28. 28.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) a wall socket directly (c) bare mains wires (d) USB or a 9 V battery
  29. 29.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a microwave oven (d) a hand pump
  30. 30.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  31. 31.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  32. 32.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a bicycle bell (d) a smart watch
  33. 33.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  34. 34.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  35. 35.Which of these has no microcontroller inside? (a) a smart watch (b) a candle (c) a digital thermometer (d) a washing machine
  36. 36.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  37. 37.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a TV remote (c) a digital thermometer (d) a spinning top
  38. 38.Which job is done by the power LED? (a) keeps the voltage steady (b) runs the program (c) shows the board is on (d) restarts the program
  39. 39.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the USB port (c) the reset button (d) the pins
  40. 40.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False

Answer key

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

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