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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 460 · 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 job is done by the USB port? (a) brings power and code (b) runs the program (c) restarts the program (d) connect sensors and LEDs
  2. 2.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the power LED (c) the reset button (d) the voltage regulator
  3. 3.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) USB or a 9 V battery (d) a 230 V cable
  4. 4.True or false: a laptop has no screen of its own. (a) False (b) True
  5. 5.🤖 What is a microcontroller? (a) a computer on one chip (b) a big desktop computer (c) a type of battery (d) a kind of bulb
  6. 6.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the USB port (c) the pins (d) the power LED
  7. 7.True or false: a laptop has a built-in keyboard. (a) False (b) True
  8. 8.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  9. 9.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  11. 11.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  12. 12.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  13. 13.Which job is done by the reset button? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) shows the board is on
  14. 14.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the power LED (d) the resistor
  15. 15.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a plain wall switch (c) a bicycle bell (d) a wind-up toy
  16. 16.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  17. 17.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the voltage regulator (c) the USB port (d) the pins
  18. 18.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  19. 19.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  20. 20.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  21. 21.Which of these usually has a microcontroller inside? (a) a smart watch (b) a plain wall switch (c) a wind-up toy (d) a bicycle bell
  22. 22.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  23. 23.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the main chip (c) the reset button (d) the USB port
  24. 24.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the power LED (c) the USB port (d) the pins
  25. 25.True or false: a laptop uses very little power. (a) True (b) False
  26. 26.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  27. 27.True or false: a laptop runs one small program. (a) False (b) True
  28. 28.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  29. 29.True or false: a candle has no microcontroller inside. (a) True (b) False
  30. 30.Which job is done by the pins? (a) keeps the voltage steady (b) restarts the program (c) brings power and code (d) connect sensors and LEDs
  31. 31.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  32. 32.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  33. 33.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  34. 34.Which of these has no microcontroller inside? (a) a toy robot (b) a washing machine (c) a wind-up toy (d) a microwave oven
  35. 35.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a digital alarm clock (d) a candle
  36. 36.True or false: a microcontroller runs one small program. (a) True (b) False
  37. 37.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  38. 38.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  39. 39.Which job is done by the main chip? (a) keeps the voltage steady (b) restarts the program (c) brings power and code (d) runs the program
  40. 40.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller

Answer key

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

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