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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 543 · 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 part of a microcontroller board runs the program? (a) the voltage regulator (b) the reset button (c) the main chip (d) the USB port
  2. 2.Which job is done by the USB port? (a) restarts the program (b) brings power and code (c) keeps the voltage steady (d) connect sensors and LEDs
  3. 3.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the main chip (c) the pins (d) the power LED
  4. 4.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  5. 5.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  6. 6.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  7. 7.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the USB port (c) the voltage regulator (d) the pins
  8. 8.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  9. 9.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) a wall socket directly (d) USB or a 9 V battery
  10. 10.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  11. 11.Which of these usually has a microcontroller inside? (a) a toy robot (b) a hand pump (c) a bicycle bell (d) a candle
  12. 12.Which of these has no microcontroller inside? (a) a smart watch (b) a toy robot (c) a washing machine (d) a plain wall switch
  13. 13.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) typed on the chip (c) uploaded over USB (d) drawn with a pen
  14. 14.True or false: a microcontroller uses very little power. (a) False (b) True
  15. 15.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  16. 16.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the voltage regulator (c) the power LED (d) the pins
  17. 17.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  18. 18.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  19. 19.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  20. 20.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a microwave oven (c) a spinning top (d) a washing machine
  21. 21.True or false: a laptop uses very little power. (a) True (b) False
  22. 22.Which job is done by the power LED? (a) keeps the voltage steady (b) runs the program (c) shows the board is on (d) brings power and code
  23. 23.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a hand pump (d) a digital alarm clock
  24. 24.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  25. 25.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  26. 26.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the USB cable (c) the power LED (d) flash memory
  27. 27.Which job is done by the main chip? (a) restarts the program (b) keeps the voltage steady (c) shows the board is on (d) runs the program
  28. 28.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  29. 29.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a bicycle bell (d) a candle
  30. 30.🤖 What is a microcontroller? (a) a kind of bulb (b) a computer on one chip (c) a big desktop computer (d) a type of battery
  31. 31.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  32. 32.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the reset button (c) the power LED (d) the USB port
  33. 33.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  34. 34.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  35. 35.Which job is done by the reset button? (a) keeps the voltage steady (b) shows the board is on (c) restarts the program (d) brings power and code
  36. 36.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  37. 37.Which job is done by the pins? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) brings power and code
  38. 38.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  39. 39.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  40. 40.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes

Answer key

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

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