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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 547 · 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 is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) bare mains wires (d) a 230 V cable
  2. 2.True or false: a laptop uses very little power. (a) True (b) False
  3. 3.Which job is done by the USB port? (a) shows the board is on (b) runs the program (c) connect sensors and LEDs (d) brings power and code
  4. 4.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  5. 5.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the power LED (c) the USB port (d) the pins
  6. 6.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  7. 7.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
  8. 8.Which job is done by the power LED? (a) keeps the voltage steady (b) runs the program (c) shows the board is on (d) connect sensors and LEDs
  9. 9.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  10. 10.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the main chip (c) the reset button (d) the pins
  11. 11.Which of these has no microcontroller inside? (a) a microwave oven (b) a smart watch (c) a hand pump (d) a digital alarm clock
  12. 12.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  13. 13.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the main chip (c) the voltage regulator (d) the USB port
  14. 14.True or false: a laptop has no screen of its own. (a) False (b) True
  15. 15.True or false: a microcontroller uses very little power. (a) True (b) False
  16. 16.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  17. 17.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  18. 18.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  19. 19.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a plain wall switch (d) a toy robot
  20. 20.True or false: a laptop has a built-in keyboard. (a) True (b) False
  21. 21.Which job is done by the main chip? (a) brings power and code (b) runs the program (c) keeps the voltage steady (d) shows the board is on
  22. 22.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a wind-up toy (d) a digital alarm clock
  23. 23.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  24. 24.Which of these has no microcontroller inside? (a) a microwave oven (b) a toy robot (c) a digital alarm clock (d) a wind-up toy
  25. 25.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  26. 26.Which job is done by the pins? (a) keeps the voltage steady (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  27. 27.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a spinning top (d) a microwave oven
  28. 28.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  29. 29.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  30. 30.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  31. 31.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) sent by sound (c) typed on the chip (d) drawn with a pen
  32. 32.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the power LED (c) the pins (d) the USB port
  33. 33.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the main chip (c) the reset button (d) the voltage regulator
  34. 34.True or false: a microcontroller runs one small program. (a) False (b) True
  35. 35.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  36. 36.True or false: a laptop runs many apps at once. (a) True (b) False
  37. 37.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the reset button (c) the USB port (d) the main chip
  38. 38.Which of these has no microcontroller inside? (a) a spinning top (b) a microwave oven (c) a digital thermometer (d) a smart watch
  39. 39.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  40. 40.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) the USB cable (d) flash memory

Answer key

  1. USB or a 9 V battery
  2. False
  3. brings power and code
  4. microcontroller
  5. the pins
  6. laptop
  7. keeps the voltage steady
  8. shows the board is on
  9. microcontroller
  10. the main chip
  11. a hand pump
  12. laptop
  13. the voltage regulator
  14. False
  15. True
  16. False
  17. No
  18. No
  19. a toy robot
  20. True
  21. runs the program
  22. a digital alarm clock
  23. laptop
  24. a wind-up toy
  25. Yes
  26. connect sensors and LEDs
  27. a microwave oven
  28. False
  29. microcontroller
  30. False
  31. uploaded over USB
  32. the power LED
  33. the USB port
  34. True
  35. True
  36. True
  37. the reset button
  38. a spinning top
  39. False
  40. flash memory

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