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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 316 · 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 usually has a microcontroller inside? (a) a hand pump (b) a washing machine (c) a plain wall switch (d) a spinning top
  2. 2.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  3. 3.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  4. 4.True or false: a microcontroller runs many apps at once. (a) False (b) True
  5. 5.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
  6. 6.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the voltage regulator (c) the reset button (d) the power LED
  7. 7.Which of these has no microcontroller inside? (a) a candle (b) a TV remote (c) a toy robot (d) a smart watch
  8. 8.Which job is done by the voltage regulator? (a) brings power and code (b) keeps the voltage steady (c) runs the program (d) connect sensors and LEDs
  9. 9.True or false: a laptop runs many apps at once. (a) True (b) False
  10. 10.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the main chip (c) the USB port (d) the power LED
  11. 11.True or false: a microcontroller uses very little power. (a) False (b) True
  12. 12.Which job is done by the main chip? (a) keeps the voltage steady (b) shows the board is on (c) connect sensors and LEDs (d) runs the program
  13. 13.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  14. 14.Which job is done by the USB port? (a) shows the board is on (b) brings power and code (c) restarts the program (d) connect sensors and LEDs
  15. 15.True or false: a laptop has no screen of its own. (a) True (b) False
  16. 16.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) uploaded over USB (d) typed on the chip
  17. 17.True or false: a microcontroller runs one small program. (a) True (b) False
  18. 18.Which job is done by the pins? (a) brings power and code (b) connect sensors and LEDs (c) keeps the voltage steady (d) shows the board is on
  19. 19.Which of these has no microcontroller inside? (a) a microwave oven (b) a toy robot (c) a spinning top (d) a washing machine
  20. 20.Which of these usually has a microcontroller inside? (a) a candle (b) a smart watch (c) a plain wall switch (d) a bicycle bell
  21. 21.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  22. 22.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  23. 23.Which of these has no microcontroller inside? (a) a washing machine (b) a digital thermometer (c) a toy robot (d) a plain wall switch
  24. 24.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  25. 25.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) the power LED (d) flash memory
  26. 26.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  27. 27.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  28. 28.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the pins (c) the power LED (d) the main chip
  29. 29.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the main chip (c) the power LED (d) the pins
  30. 30.True or false: a laptop runs one small program. (a) True (b) False
  31. 31.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  32. 32.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it starts again (d) it deletes itself
  33. 33.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a microwave oven (d) a candle
  34. 34.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  35. 35.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  36. 36.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  37. 37.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  38. 38.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the power LED (c) the USB port (d) the voltage regulator
  39. 39.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  40. 40.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True

Answer key

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

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