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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 190 · 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 microwave oven (c) a hand pump (d) a toy robot
  2. 2.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
  3. 3.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  4. 4.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  5. 5.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  6. 6.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  7. 7.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  8. 8.🤖 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
  9. 9.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the reset button (c) the pins (d) the main chip
  10. 10.Which job is done by the pins? (a) keeps the voltage steady (b) connect sensors and LEDs (c) restarts the program (d) shows the board is on
  11. 11.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  12. 12.Which of these usually has a microcontroller inside? (a) a spinning top (b) a hand pump (c) a toy robot (d) a plain wall switch
  13. 13.Which job is done by the USB port? (a) keeps the voltage steady (b) brings power and code (c) connect sensors and LEDs (d) restarts the program
  14. 14.Which of these has no microcontroller inside? (a) a digital thermometer (b) a TV remote (c) a toy robot (d) a candle
  15. 15.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  16. 16.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  17. 17.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  18. 18.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) bare mains wires (d) USB or a 9 V battery
  19. 19.🤖 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
  20. 20.True or false: a microcontroller runs one small program. (a) True (b) False
  21. 21.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  22. 22.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  23. 23.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the voltage regulator (c) the USB port (d) the pins
  24. 24.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  25. 25.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  26. 26.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  27. 27.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  28. 28.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  29. 29.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  30. 30.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a candle (d) a wind-up toy
  31. 31.Which of these usually has a microcontroller inside? (a) a washing machine (b) a hand pump (c) a wind-up toy (d) a spinning top
  32. 32.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a spinning top (c) a bicycle bell (d) a plain wall switch
  33. 33.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  34. 34.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  35. 35.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  36. 36.Which of these usually has a microcontroller inside? (a) a candle (b) a digital alarm clock (c) a plain wall switch (d) a wind-up toy
  37. 37.True or false: a laptop runs one small program. (a) True (b) False
  38. 38.True or false: a microcontroller runs many apps at once. (a) False (b) True
  39. 39.Which of these has no microcontroller inside? (a) a bicycle bell (b) a washing machine (c) a digital alarm clock (d) a microwave oven
  40. 40.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the USB port (c) the main chip (d) the pins

Answer key

  1. a hand pump
  2. restarts the program
  3. False
  4. No
  5. False
  6. No
  7. True
  8. flash memory
  9. the reset button
  10. connect sensors and LEDs
  11. Yes
  12. a toy robot
  13. brings power and code
  14. a candle
  15. microcontroller
  16. microcontroller
  17. laptop
  18. USB or a 9 V battery
  19. a computer on one chip
  20. True
  21. No
  22. False
  23. the voltage regulator
  24. Yes
  25. Yes
  26. True
  27. False
  28. Yes
  29. microcontroller
  30. a microwave oven
  31. a washing machine
  32. a digital thermometer
  33. laptop
  34. True
  35. laptop
  36. a digital alarm clock
  37. False
  38. False
  39. a bicycle bell
  40. the main chip

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