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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 306 · 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.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  2. 2.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  3. 3.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the main chip (c) the USB port (d) the reset button
  4. 4.Which job is done by the pins? (a) brings power and code (b) runs the program (c) connect sensors and LEDs (d) restarts the program
  5. 5.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  6. 6.🤖 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
  7. 7.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the main chip (c) the voltage regulator (d) the USB port
  8. 8.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  9. 9.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  10. 10.Which job is done by the USB port? (a) brings power and code (b) restarts the program (c) shows the board is on (d) connect sensors and LEDs
  11. 11.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a wind-up toy (d) a smart watch
  12. 12.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  13. 13.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  14. 14.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a microwave oven (d) a spinning top
  15. 15.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital alarm clock (c) a hand pump (d) a smart watch
  16. 16.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  17. 17.True or false: a laptop has no screen of its own. (a) False (b) True
  18. 18.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  19. 19.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  20. 20.Which job is done by the main chip? (a) connect sensors and LEDs (b) keeps the voltage steady (c) brings power and code (d) runs the program
  21. 21.Which job is done by the power LED? (a) shows the board is on (b) restarts the program (c) runs the program (d) connect sensors and LEDs
  22. 22.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  23. 23.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  24. 24.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the power LED (c) the reset button (d) the main chip
  25. 25.True or false: a laptop uses very little power. (a) True (b) False
  26. 26.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a candle (d) a washing machine
  27. 27.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  28. 28.Which of these has no microcontroller inside? (a) a plain wall switch (b) a toy robot (c) a TV remote (d) a washing machine
  29. 29.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  30. 30.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  31. 31.True or false: a laptop has a built-in keyboard. (a) False (b) True
  32. 32.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the USB cable (d) the resistor
  33. 33.Which job is done by the voltage regulator? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) runs the program
  34. 34.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  35. 35.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  36. 36.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  37. 37.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the main chip (c) the power LED (d) the reset button
  38. 38.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  39. 39.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  40. 40.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the USB port (c) the voltage regulator (d) the pins

Answer key

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

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