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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 550 · 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) USB or a 9 V battery (c) a 230 V cable (d) a wall socket directly
  2. 2.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  3. 3.Which of these has no microcontroller inside? (a) a bicycle bell (b) a smart watch (c) a digital alarm clock (d) a microwave oven
  4. 4.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a spinning top (c) a plain wall switch (d) a hand pump
  5. 5.Which of these usually has a microcontroller inside? (a) a candle (b) a washing machine (c) a plain wall switch (d) a bicycle bell
  6. 6.True or false: a microcontroller runs many apps at once. (a) True (b) False
  7. 7.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  8. 8.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a candle (d) a toy robot
  9. 9.Which job is done by the USB port? (a) restarts the program (b) shows the board is on (c) keeps the voltage steady (d) brings power and code
  10. 10.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  11. 11.True or false: a microcontroller uses very little power. (a) False (b) True
  12. 12.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  13. 13.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  14. 14.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the reset button (c) the USB port (d) the pins
  15. 15.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) runs the program (c) connect sensors and LEDs (d) restarts the program
  16. 16.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  17. 17.True or false: a microcontroller runs one small program. (a) True (b) False
  18. 18.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  19. 19.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  20. 20.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  21. 21.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  22. 22.Which job is done by the pins? (a) restarts the program (b) runs the program (c) connect sensors and LEDs (d) brings power and code
  23. 23.Which job is done by the reset button? (a) connect sensors and LEDs (b) restarts the program (c) runs the program (d) shows the board is on
  24. 24.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a type of battery (d) a computer on one chip
  25. 25.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  26. 26.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a plain wall switch (d) a smart watch
  27. 27.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  28. 28.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a plain wall switch (c) a candle (d) a spinning top
  29. 29.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  30. 30.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  31. 31.Which job is done by the main chip? (a) brings power and code (b) runs the program (c) connect sensors and LEDs (d) restarts the program
  32. 32.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the pins (c) the main chip (d) the power LED
  33. 33.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) the power LED (d) flash memory
  34. 34.True or false: a laptop runs one small program. (a) False (b) True
  35. 35.True or false: a spinning top has no microcontroller inside. (a) True (b) False
  36. 36.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  37. 37.True or false: a laptop has a built-in keyboard. (a) False (b) True
  38. 38.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the power LED (c) the main chip (d) the voltage regulator
  39. 39.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  40. 40.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No

Answer key

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

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