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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 722 · 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.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
  2. 2.Which job is done by the power LED? (a) connect sensors and LEDs (b) keeps the voltage steady (c) brings power and code (d) shows the board is on
  3. 3.Which of these has no microcontroller inside? (a) a TV remote (b) a plain wall switch (c) a washing machine (d) a digital alarm clock
  4. 4.Which of these has no microcontroller inside? (a) a candle (b) a smart watch (c) a digital alarm clock (d) a washing machine
  5. 5.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a washing machine (d) a hand pump
  6. 6.🤖 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
  7. 7.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  8. 8.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the reset button (c) the power LED (d) the voltage regulator
  9. 9.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  10. 10.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  11. 11.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) the resistor (d) flash memory
  12. 12.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  13. 13.True or false: a microcontroller runs one small program. (a) True (b) False
  14. 14.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the power LED (c) the pins (d) the main chip
  15. 15.True or false: a laptop runs many apps at once. (a) True (b) False
  16. 16.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  17. 17.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  18. 18.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  19. 19.True or false: a microcontroller runs many apps at once. (a) False (b) True
  20. 20.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  21. 21.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) bare mains wires (d) a wall socket directly
  22. 22.Which of these has no microcontroller inside? (a) a toy robot (b) a microwave oven (c) a digital alarm clock (d) a hand pump
  23. 23.Which of these has no microcontroller inside? (a) a microwave oven (b) a bicycle bell (c) a digital alarm clock (d) a toy robot
  24. 24.Which job is done by the pins? (a) restarts the program (b) connect sensors and LEDs (c) shows the board is on (d) keeps the voltage steady
  25. 25.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  26. 26.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the USB port (c) the power LED (d) the voltage regulator
  27. 27.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  28. 28.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the power LED (c) the main chip (d) the reset button
  29. 29.Which job is done by the main chip? (a) connect sensors and LEDs (b) runs the program (c) shows the board is on (d) restarts the program
  30. 30.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  31. 31.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a microwave oven (d) a bicycle bell
  32. 32.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  33. 33.True or false: a laptop needs much more power. (a) False (b) True
  34. 34.True or false: a microcontroller uses very little power. (a) False (b) True
  35. 35.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  36. 36.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  37. 37.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  38. 38.🧭 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
  39. 39.True or false: a laptop has no screen of its own. (a) False (b) True
  40. 40.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop

Answer key

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

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