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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 346 · 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 washing machine usually have a microcontroller inside? (a) No (b) Yes
  2. 2.Which job is done by the pins? (a) keeps the voltage steady (b) restarts the program (c) shows the board is on (d) connect sensors and LEDs
  3. 3.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  4. 4.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  5. 5.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the USB port (c) the pins (d) the voltage regulator
  6. 6.Which of these usually has a microcontroller inside? (a) a smart watch (b) a plain wall switch (c) a bicycle bell (d) a candle
  7. 7.Which of these has no microcontroller inside? (a) a microwave oven (b) a TV remote (c) a digital thermometer (d) a wind-up toy
  8. 8.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  9. 9.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  10. 10.🤖 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
  11. 11.Which job is done by the USB port? (a) shows the board is on (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  12. 12.True or false: a laptop runs one small program. (a) True (b) False
  13. 13.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  14. 14.Which of these has no microcontroller inside? (a) a washing machine (b) a digital thermometer (c) a microwave oven (d) a plain wall switch
  15. 15.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  16. 16.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  17. 17.True or false: a candle has no microcontroller inside. (a) False (b) True
  18. 18.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a washing machine (d) a hand pump
  19. 19.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  20. 20.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  21. 21.Which of these has no microcontroller inside? (a) a washing machine (b) a digital alarm clock (c) a bicycle bell (d) a smart watch
  22. 22.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  23. 23.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  24. 24.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) the board breaks (c) it deletes itself (d) it stops forever
  25. 25.Which job is done by the reset button? (a) shows the board is on (b) connect sensors and LEDs (c) restarts the program (d) brings power and code
  26. 26.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  27. 27.True or false: a microcontroller has no screen of its own. (a) False (b) True
  28. 28.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a hand pump (d) a smart watch
  29. 29.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  30. 30.Which job is done by the power LED? (a) brings power and code (b) connect sensors and LEDs (c) runs the program (d) shows the board is on
  31. 31.True or false: a microcontroller needs much more power. (a) True (b) False
  32. 32.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  33. 33.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the pins (c) the power LED (d) the voltage regulator
  34. 34.Which job is done by the main chip? (a) runs the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) shows the board is on
  35. 35.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) a 230 V cable (d) USB or a 9 V battery
  36. 36.🧭 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
  37. 37.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a hand pump (d) a digital alarm clock
  38. 38.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  39. 39.True or false: a microcontroller runs many apps at once. (a) False (b) True
  40. 40.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) sent by sound (c) drawn with a pen (d) typed on the chip

Answer key

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

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