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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 493 · 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.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  2. 2.True or false: a laptop runs one small program. (a) True (b) False
  3. 3.Which job is done by the USB port? (a) keeps the voltage steady (b) brings power and code (c) shows the board is on (d) restarts the program
  4. 4.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  5. 5.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the reset button (c) the pins (d) the voltage regulator
  6. 6.Which of these has no microcontroller inside? (a) a spinning top (b) a microwave oven (c) a washing machine (d) a TV remote
  7. 7.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  8. 8.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  9. 9.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) the board breaks (c) it stops forever (d) it deletes itself
  10. 10.Which of these has no microcontroller inside? (a) a candle (b) a microwave oven (c) a washing machine (d) a digital thermometer
  11. 11.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  12. 12.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the resistor (d) the USB cable
  13. 13.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a wall socket directly (d) a 230 V cable
  14. 14.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  15. 15.Which of these has no microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a washing machine (d) a digital thermometer
  16. 16.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  17. 17.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) drawn with a pen (d) sent by sound
  18. 18.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the reset button (c) the main chip (d) the voltage regulator
  19. 19.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  20. 20.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  21. 21.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  22. 22.Which job is done by the reset button? (a) shows the board is on (b) restarts the program (c) connect sensors and LEDs (d) keeps the voltage steady
  23. 23.True or false: a laptop has a built-in keyboard. (a) False (b) True
  24. 24.True or false: a laptop has no screen of its own. (a) True (b) False
  25. 25.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  26. 26.True or false: a microcontroller uses very little power. (a) False (b) True
  27. 27.Which of these usually has a microcontroller inside? (a) a candle (b) a digital thermometer (c) a plain wall switch (d) a spinning top
  28. 28.Which of these has no microcontroller inside? (a) a wind-up toy (b) a digital alarm clock (c) a digital thermometer (d) a TV remote
  29. 29.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the main chip (c) the pins (d) the reset button
  30. 30.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a washing machine (c) a hand pump (d) a spinning top
  31. 31.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  32. 32.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  33. 33.True or false: a laptop uses very little power. (a) True (b) False
  34. 34.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  35. 35.True or false: a laptop runs many apps at once. (a) True (b) False
  36. 36.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  37. 37.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  38. 38.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  39. 39.True or false: a microcontroller needs much more power. (a) False (b) True
  40. 40.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the voltage regulator (c) the power LED (d) the pins

Answer key

  1. No
  2. False
  3. brings power and code
  4. keeps the voltage steady
  5. the pins
  6. a spinning top
  7. microcontroller
  8. False
  9. it starts again
  10. a candle
  11. False
  12. flash memory
  13. USB or a 9 V battery
  14. Yes
  15. a plain wall switch
  16. No
  17. uploaded over USB
  18. the main chip
  19. microcontroller
  20. microcontroller
  21. True
  22. restarts the program
  23. True
  24. False
  25. True
  26. True
  27. a digital thermometer
  28. a wind-up toy
  29. the USB port
  30. a washing machine
  31. False
  32. laptop
  33. False
  34. False
  35. True
  36. laptop
  37. No
  38. False
  39. False
  40. the voltage regulator

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