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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 154 · 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 is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) a 230 V cable (d) USB or a 9 V battery
  2. 2.Which job is done by the pins? (a) shows the board is on (b) restarts the program (c) runs the program (d) connect sensors and LEDs
  3. 3.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  4. 4.Which job is done by the reset button? (a) shows the board is on (b) brings power and code (c) runs the program (d) restarts the program
  5. 5.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  6. 6.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital alarm clock (c) a bicycle bell (d) a plain wall switch
  7. 7.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  8. 8.True or false: a laptop uses very little power. (a) True (b) False
  9. 9.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) uploaded over USB (d) typed on the chip
  11. 11.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) shows the board is on (c) connect sensors and LEDs (d) restarts the program
  12. 12.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a TV remote (c) a spinning top (d) a candle
  13. 13.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the main chip (c) the reset button (d) the USB port
  14. 14.True or false: a microcontroller uses very little power. (a) False (b) True
  15. 15.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a kind of bulb (d) a big desktop computer
  16. 16.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital thermometer (c) a spinning top (d) a candle
  17. 17.🤖 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
  18. 18.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the main chip (c) the pins (d) the reset button
  19. 19.Which of these has no microcontroller inside? (a) a microwave oven (b) a TV remote (c) a digital thermometer (d) a candle
  20. 20.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a washing machine (d) a spinning top
  21. 21.True or false: a laptop runs one small program. (a) True (b) False
  22. 22.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  23. 23.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  24. 24.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the reset button (c) the USB port (d) the pins
  25. 25.Which job is done by the USB port? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) restarts the program
  26. 26.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  27. 27.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  28. 28.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the USB port (c) the pins (d) the reset button
  29. 29.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a hand pump (c) a TV remote (d) a smart watch
  30. 30.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  31. 31.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a smart watch (c) a microwave oven (d) a plain wall switch
  32. 32.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a plain wall switch (d) a microwave oven
  33. 33.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  34. 34.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  35. 35.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the pins (c) the voltage regulator (d) the power LED
  36. 36.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  37. 37.Which job is done by the power LED? (a) runs the program (b) connect sensors and LEDs (c) restarts the program (d) shows the board is on
  38. 38.True or false: a laptop needs much more power. (a) True (b) False
  39. 39.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  40. 40.True or false: a microcontroller has no screen of its own. (a) True (b) False

Answer key

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

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