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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 425 · 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 has no microcontroller inside? (a) a hand pump (b) a microwave oven (c) a smart watch (d) a toy robot
  2. 2.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  3. 3.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  4. 4.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  5. 5.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) bare mains wires (d) USB or a 9 V battery
  6. 6.True or false: a microcontroller runs many apps at once. (a) False (b) True
  7. 7.Which job is done by the main chip? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) runs the program
  8. 8.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the reset button (c) the USB port (d) the pins
  9. 9.True or false: a microcontroller has no screen of its own. (a) False (b) True
  10. 10.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  11. 11.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a microwave oven (c) a wind-up toy (d) a hand pump
  12. 12.True or false: a laptop uses very little power. (a) True (b) False
  13. 13.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a wind-up toy (d) a smart watch
  14. 14.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) it starts again (d) the board breaks
  15. 15.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the main chip (c) the USB port (d) the pins
  16. 16.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a kind of bulb (d) a computer on one chip
  17. 17.True or false: a laptop runs many apps at once. (a) False (b) True
  18. 18.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the pins (c) the reset button (d) the power LED
  19. 19.Which job is done by the USB port? (a) runs the program (b) keeps the voltage steady (c) restarts the program (d) brings power and code
  20. 20.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the power LED (c) the USB port (d) the reset button
  21. 21.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  22. 22.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  23. 23.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  24. 24.True or false: a laptop runs one small program. (a) True (b) False
  25. 25.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  26. 26.True or false: a spinning top has no microcontroller inside. (a) True (b) False
  27. 27.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) keeps the voltage steady
  28. 28.Which of these usually has a microcontroller inside? (a) a spinning top (b) a washing machine (c) a wind-up toy (d) a bicycle bell
  29. 29.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  30. 30.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a wind-up toy (d) a digital thermometer
  31. 31.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the reset button (c) the voltage regulator (d) the power LED
  32. 32.Which job is done by the reset button? (a) restarts the program (b) connect sensors and LEDs (c) brings power and code (d) keeps the voltage steady
  33. 33.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  34. 34.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  35. 35.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  36. 36.Which of these usually has a microcontroller inside? (a) a TV remote (b) a hand pump (c) a bicycle bell (d) a wind-up toy
  37. 37.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  38. 38.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the power LED (c) the main chip (d) the voltage regulator
  39. 39.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  40. 40.Which job is done by the power LED? (a) keeps the voltage steady (b) shows the board is on (c) restarts the program (d) connect sensors and LEDs

Answer key

  1. a hand pump
  2. False
  3. Yes
  4. No
  5. USB or a 9 V battery
  6. False
  7. runs the program
  8. the USB port
  9. True
  10. microcontroller
  11. a microwave oven
  12. False
  13. a smart watch
  14. it starts again
  15. the pins
  16. a computer on one chip
  17. True
  18. the power LED
  19. brings power and code
  20. the reset button
  21. laptop
  22. Yes
  23. True
  24. False
  25. Yes
  26. True
  27. keeps the voltage steady
  28. a washing machine
  29. microcontroller
  30. a digital thermometer
  31. the voltage regulator
  32. restarts the program
  33. False
  34. laptop
  35. True
  36. a TV remote
  37. Yes
  38. the main chip
  39. No
  40. shows the board is on

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