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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 383 · 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 wind-up toy (b) a smart watch (c) a washing machine (d) a microwave oven
  2. 2.Which of these has no microcontroller inside? (a) a candle (b) a TV remote (c) a digital thermometer (d) a smart watch
  3. 3.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  4. 4.True or false: a laptop needs much more power. (a) True (b) False
  5. 5.True or false: a microcontroller uses very little power. (a) False (b) True
  6. 6.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  7. 7.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the reset button (c) the voltage regulator (d) the USB port
  8. 8.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  9. 9.Which job is done by the main chip? (a) keeps the voltage steady (b) brings power and code (c) runs the program (d) restarts the program
  10. 10.Which of these has no microcontroller inside? (a) a plain wall switch (b) a digital alarm clock (c) a digital thermometer (d) a washing machine
  11. 11.Which job is done by the pins? (a) runs the program (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  12. 12.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  13. 13.True or false: a laptop runs many apps at once. (a) True (b) False
  14. 14.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  15. 15.Which job is done by the USB port? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) shows the board is on
  16. 16.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  17. 17.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  18. 18.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the voltage regulator (c) the main chip (d) the USB port
  19. 19.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  20. 20.True or false: a microcontroller runs one small program. (a) False (b) True
  21. 21.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  22. 22.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  23. 23.Which job is done by the voltage regulator? (a) restarts the program (b) shows the board is on (c) connect sensors and LEDs (d) keeps the voltage steady
  24. 24.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  25. 25.True or false: a laptop runs one small program. (a) True (b) False
  26. 26.True or false: a laptop has a built-in keyboard. (a) True (b) False
  27. 27.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  28. 28.True or false: a laptop has no screen of its own. (a) True (b) False
  29. 29.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) sent by sound (d) typed on the chip
  30. 30.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  31. 31.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a candle (c) a wind-up toy (d) a hand pump
  32. 32.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the USB port (c) the voltage regulator (d) the pins
  33. 33.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  34. 34.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
  35. 35.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  36. 36.True or false: a microcontroller needs much more power. (a) True (b) False
  37. 37.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  38. 38.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) it deletes itself (d) the board breaks
  39. 39.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  40. 40.Which job is done by the power LED? (a) connect sensors and LEDs (b) keeps the voltage steady (c) shows the board is on (d) runs the program

Answer key

  1. a wind-up toy
  2. a candle
  3. No
  4. True
  5. True
  6. microcontroller
  7. the reset button
  8. laptop
  9. runs the program
  10. a plain wall switch
  11. connect sensors and LEDs
  12. laptop
  13. True
  14. Yes
  15. brings power and code
  16. microcontroller
  17. laptop
  18. the power LED
  19. Yes
  20. True
  21. False
  22. No
  23. keeps the voltage steady
  24. True
  25. False
  26. True
  27. False
  28. False
  29. uploaded over USB
  30. False
  31. a microwave oven
  32. the voltage regulator
  33. False
  34. USB or a 9 V battery
  35. Yes
  36. False
  37. Yes
  38. it starts again
  39. Yes
  40. shows the board is on

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