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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 447 · 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) connect sensors and LEDs (b) restarts the program (c) shows the board is on (d) keeps the voltage steady
  2. 2.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the voltage regulator (c) the reset button (d) the USB port
  3. 3.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the voltage regulator (c) the main chip (d) the power LED
  4. 4.True or false: a candle has no microcontroller inside. (a) False (b) True
  5. 5.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the reset button (c) the main chip (d) the USB port
  6. 6.Which of these usually has a microcontroller inside? (a) a hand pump (b) a smart watch (c) a bicycle bell (d) a plain wall switch
  7. 7.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  8. 8.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a digital alarm clock (d) a bicycle bell
  9. 9.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  10. 10.True or false: a microcontroller uses very little power. (a) False (b) True
  11. 11.🤖 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
  12. 12.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  13. 13.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  14. 14.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  15. 15.Which job is done by the power LED? (a) shows the board is on (b) runs the program (c) connect sensors and LEDs (d) brings power and code
  16. 16.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a bicycle bell (d) a hand pump
  17. 17.Which of these has no microcontroller inside? (a) a digital thermometer (b) a hand pump (c) a TV remote (d) a smart watch
  18. 18.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  19. 19.🤖 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
  20. 20.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  21. 21.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  22. 22.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  23. 23.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) a 230 V cable (d) bare mains wires
  24. 24.Which job is done by the USB port? (a) restarts the program (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  25. 25.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  26. 26.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  27. 27.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a washing machine (d) a candle
  28. 28.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a candle (c) a wind-up toy (d) a digital alarm clock
  29. 29.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  30. 30.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  31. 31.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  32. 32.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the USB port (c) the voltage regulator (d) the pins
  33. 33.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  34. 34.True or false: a microcontroller has no screen of its own. (a) False (b) True
  35. 35.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  36. 36.True or false: a laptop runs one small program. (a) False (b) True
  37. 37.Which of these has no microcontroller inside? (a) a digital thermometer (b) a washing machine (c) a digital alarm clock (d) a candle
  38. 38.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  39. 39.Which job is done by the main chip? (a) runs the program (b) keeps the voltage steady (c) restarts the program (d) connect sensors and LEDs
  40. 40.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the main chip (c) the voltage regulator (d) the reset button

Answer key

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

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