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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 646 · 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 candle (b) a plain wall switch (c) a bicycle bell (d) a digital thermometer
  2. 2.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the USB port (c) the main chip (d) the voltage regulator
  3. 3.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  4. 4.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the main chip (c) the pins (d) the USB port
  5. 5.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  6. 6.True or false: a laptop uses very little power. (a) True (b) False
  7. 7.Which of these has no microcontroller inside? (a) a washing machine (b) a candle (c) a TV remote (d) a toy robot
  8. 8.Which job is done by the USB port? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) runs the program
  9. 9.True or false: a laptop runs many apps at once. (a) True (b) False
  10. 10.Which job is done by the pins? (a) keeps the voltage steady (b) connect sensors and LEDs (c) restarts the program (d) runs the program
  11. 11.Which of these usually has a microcontroller inside? (a) a smart watch (b) a plain wall switch (c) a wind-up toy (d) a spinning top
  12. 12.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  13. 13.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  14. 14.Which job is done by the reset button? (a) keeps the voltage steady (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
  15. 15.True or false: a microcontroller runs many apps at once. (a) True (b) False
  16. 16.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a big desktop computer (d) a kind of bulb
  17. 17.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  18. 18.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  19. 19.True or false: a candle has no microcontroller inside. (a) False (b) True
  20. 20.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  21. 21.Which job is done by the main chip? (a) keeps the voltage steady (b) restarts the program (c) runs the program (d) brings power and code
  22. 22.Which job is done by the power LED? (a) brings power and code (b) keeps the voltage steady (c) shows the board is on (d) connect sensors and LEDs
  23. 23.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a digital alarm clock (d) a wind-up toy
  24. 24.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) USB or a 9 V battery (d) a 230 V cable
  25. 25.True or false: a microcontroller has no screen of its own. (a) False (b) True
  26. 26.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a wind-up toy (c) a hand pump (d) a toy robot
  27. 27.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the USB port (c) the main chip (d) the power LED
  28. 28.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a digital alarm clock (c) a bicycle bell (d) a spinning top
  29. 29.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  30. 30.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  31. 31.True or false: a laptop has no screen of its own. (a) True (b) False
  32. 32.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  33. 33.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a toy robot (c) a spinning top (d) a microwave oven
  34. 34.True or false: a microcontroller runs one small program. (a) False (b) True
  35. 35.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  36. 36.True or false: a microcontroller uses very little power. (a) True (b) False
  37. 37.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  38. 38.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  39. 39.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a hand pump (d) a TV remote
  40. 40.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes

Answer key

  1. a digital thermometer
  2. the USB port
  3. Yes
  4. the pins
  5. laptop
  6. False
  7. a candle
  8. brings power and code
  9. True
  10. connect sensors and LEDs
  11. a smart watch
  12. microcontroller
  13. False
  14. restarts the program
  15. False
  16. a computer on one chip
  17. True
  18. False
  19. True
  20. False
  21. runs the program
  22. shows the board is on
  23. a wind-up toy
  24. USB or a 9 V battery
  25. True
  26. a toy robot
  27. the main chip
  28. a digital alarm clock
  29. False
  30. False
  31. False
  32. Yes
  33. a spinning top
  34. True
  35. False
  36. True
  37. True
  38. laptop
  39. a TV remote
  40. Yes

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