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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 498 · 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) a 230 V cable (c) USB or a 9 V battery (d) bare mains wires
  2. 2.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  3. 3.Which job is done by the pins? (a) runs the program (b) keeps the voltage steady (c) restarts the program (d) connect sensors and LEDs
  4. 4.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  5. 5.Which job is done by the reset button? (a) restarts the program (b) shows the board is on (c) keeps the voltage steady (d) brings power and code
  6. 6.True or false: a laptop uses very little power. (a) True (b) False
  7. 7.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  8. 8.Which of these has no microcontroller inside? (a) a candle (b) a washing machine (c) a TV remote (d) a smart watch
  9. 9.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) it stops forever (d) the board breaks
  10. 10.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) typed on the chip (d) drawn with a pen
  11. 11.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) flash memory (d) the USB cable
  12. 12.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the power LED (c) the reset button (d) the USB port
  13. 13.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  14. 14.True or false: a laptop runs many apps at once. (a) True (b) False
  15. 15.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a kind of bulb (d) a big desktop computer
  16. 16.Which job is done by the USB port? (a) runs the program (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
  17. 17.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  18. 18.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the pins (c) the power LED (d) the main chip
  19. 19.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the power LED (c) the voltage regulator (d) the pins
  20. 20.Which of these has no microcontroller inside? (a) a smart watch (b) a microwave oven (c) a plain wall switch (d) a digital alarm clock
  21. 21.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  22. 22.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  23. 23.True or false: a microcontroller runs one small program. (a) True (b) False
  24. 24.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  25. 25.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  26. 26.True or false: a laptop runs one small program. (a) True (b) False
  27. 27.True or false: a microcontroller runs many apps at once. (a) True (b) False
  28. 28.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  29. 29.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  30. 30.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  31. 31.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a plain wall switch (d) a smart watch
  32. 32.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  33. 33.Which of these usually has a microcontroller inside? (a) a washing machine (b) a bicycle bell (c) a plain wall switch (d) a hand pump
  34. 34.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  35. 35.True or false: a microcontroller uses very little power. (a) True (b) False
  36. 36.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  37. 37.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  38. 38.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a candle (d) a microwave oven
  39. 39.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  40. 40.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True

Answer key

  1. USB or a 9 V battery
  2. False
  3. connect sensors and LEDs
  4. True
  5. restarts the program
  6. False
  7. No
  8. a candle
  9. it starts again
  10. uploaded over USB
  11. flash memory
  12. the USB port
  13. laptop
  14. True
  15. a computer on one chip
  16. brings power and code
  17. laptop
  18. the voltage regulator
  19. the power LED
  20. a plain wall switch
  21. False
  22. False
  23. True
  24. True
  25. microcontroller
  26. False
  27. False
  28. No
  29. True
  30. No
  31. a smart watch
  32. False
  33. a washing machine
  34. No
  35. True
  36. Yes
  37. laptop
  38. a microwave oven
  39. microcontroller
  40. True

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