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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 732 · 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.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  2. 2.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  3. 3.Which of these usually has a microcontroller inside? (a) a washing machine (b) a candle (c) a wind-up toy (d) a plain wall switch
  4. 4.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  5. 5.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) the board breaks (d) it stops forever
  6. 6.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the reset button (c) the voltage regulator (d) the USB port
  7. 7.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  8. 8.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the reset button (c) the main chip (d) the USB port
  9. 9.Which job is done by the power LED? (a) restarts the program (b) brings power and code (c) shows the board is on (d) keeps the voltage steady
  10. 10.True or false: a microcontroller uses very little power. (a) False (b) True
  11. 11.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  12. 12.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a spinning top (d) a digital thermometer
  13. 13.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  14. 14.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  15. 15.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  16. 16.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  17. 17.Which of these usually has a microcontroller inside? (a) a candle (b) a microwave oven (c) a wind-up toy (d) a bicycle bell
  18. 18.Which job is done by the pins? (a) keeps the voltage steady (b) brings power and code (c) restarts the program (d) connect sensors and LEDs
  19. 19.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  20. 20.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  21. 21.Which job is done by the USB port? (a) shows the board is on (b) brings power and code (c) restarts the program (d) runs the program
  22. 22.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  23. 23.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  24. 24.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  25. 25.Which job is done by the reset button? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) runs the program
  26. 26.Which of these has no microcontroller inside? (a) a toy robot (b) a digital thermometer (c) a wind-up toy (d) a washing machine
  27. 27.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  28. 28.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) USB or a 9 V battery (d) a wall socket directly
  29. 29.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  30. 30.True or false: a laptop uses very little power. (a) False (b) True
  31. 31.Which job is done by the main chip? (a) runs the program (b) restarts the program (c) keeps the voltage steady (d) brings power and code
  32. 32.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the USB cable (d) the power LED
  33. 33.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the USB port (c) the power LED (d) the reset button
  34. 34.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  35. 35.True or false: a microcontroller needs much more power. (a) False (b) True
  36. 36.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) sent by sound (d) typed on the chip
  37. 37.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  38. 38.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  39. 39.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  40. 40.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True

Answer key

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

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