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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 331 · 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 TV remote (b) a smart watch (c) a candle (d) a digital alarm clock
  2. 2.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  3. 3.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  4. 4.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  5. 5.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a 230 V cable (d) a wall socket directly
  6. 6.Which job is done by the reset button? (a) shows the board is on (b) brings power and code (c) connect sensors and LEDs (d) restarts the program
  7. 7.Which of these has no microcontroller inside? (a) a wind-up toy (b) a digital alarm clock (c) a TV remote (d) a microwave oven
  8. 8.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the power LED (c) the pins (d) the main chip
  9. 9.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a spinning top (c) a plain wall switch (d) a wind-up toy
  10. 10.Which job is done by the main chip? (a) brings power and code (b) shows the board is on (c) runs the program (d) restarts the program
  11. 11.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  12. 12.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  13. 13.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) sent by sound (d) drawn with a pen
  14. 14.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) the board breaks (d) it stops forever
  15. 15.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  16. 16.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a washing machine (d) a wind-up toy
  17. 17.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the voltage regulator (c) the pins (d) the reset button
  18. 18.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the power LED (c) the pins (d) the main chip
  19. 19.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  20. 20.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  21. 21.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) the USB cable (d) flash memory
  22. 22.True or false: a laptop has a built-in keyboard. (a) True (b) False
  23. 23.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  24. 24.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  25. 25.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a type of battery (d) a computer on one chip
  26. 26.Which job is done by the USB port? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) restarts the program
  27. 27.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  28. 28.True or false: a laptop runs one small program. (a) True (b) False
  29. 29.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a plain wall switch (d) a digital thermometer
  30. 30.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  31. 31.True or false: a laptop uses very little power. (a) False (b) True
  32. 32.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  33. 33.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  34. 34.Which of these usually has a microcontroller inside? (a) a smart watch (b) a bicycle bell (c) a spinning top (d) a wind-up toy
  35. 35.Which of these has no microcontroller inside? (a) a spinning top (b) a smart watch (c) a TV remote (d) a washing machine
  36. 36.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a microwave oven (c) a smart watch (d) a hand pump
  37. 37.True or false: a microcontroller has no screen of its own. (a) False (b) True
  38. 38.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the pins (c) the voltage regulator (d) the main chip
  39. 39.Which of these has no microcontroller inside? (a) a washing machine (b) a TV remote (c) a plain wall switch (d) a microwave oven
  40. 40.Which job is done by the power LED? (a) restarts the program (b) keeps the voltage steady (c) shows the board is on (d) connect sensors and LEDs

Answer key

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

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