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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 141 · 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 pins (b) the power LED (c) the main chip (d) the USB port
  2. 2.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  3. 3.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  4. 4.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  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 bicycle bell (b) a plain wall switch (c) a smart watch (d) a hand pump
  7. 7.True or false: a microcontroller runs one small program. (a) False (b) True
  8. 8.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  9. 9.True or false: a microcontroller uses very little power. (a) False (b) True
  10. 10.True or false: a microcontroller has no screen of its own. (a) True (b) False
  11. 11.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  12. 12.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a candle (c) a microwave oven (d) a hand pump
  13. 13.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  14. 14.Which job is done by the main chip? (a) keeps the voltage steady (b) shows the board is on (c) runs the program (d) brings power and code
  15. 15.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a 230 V cable (d) a wall socket directly
  16. 16.True or false: a laptop runs many apps at once. (a) True (b) False
  17. 17.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the reset button (c) the USB port (d) the voltage regulator
  18. 18.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  19. 19.Which job is done by the USB port? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) brings power and code
  20. 20.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the USB cable (d) the resistor
  21. 21.🤖 What is a microcontroller? (a) a kind of bulb (b) a type of battery (c) a computer on one chip (d) a big desktop computer
  22. 22.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a smart watch (c) a wind-up toy (d) a TV remote
  23. 23.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  24. 24.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) drawn with a pen (d) typed on the chip
  25. 25.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  26. 26.Which of these has no microcontroller inside? (a) a microwave oven (b) a TV remote (c) a candle (d) a smart watch
  27. 27.Which of these has no microcontroller inside? (a) a smart watch (b) a bicycle bell (c) a digital alarm clock (d) a digital thermometer
  28. 28.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the pins (c) the power LED (d) the USB port
  29. 29.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
  30. 30.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) the board breaks (d) it stops forever
  31. 31.True or false: a laptop has a built-in keyboard. (a) False (b) True
  32. 32.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  33. 33.True or false: a microcontroller runs many apps at once. (a) False (b) True
  34. 34.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a toy robot (d) a candle
  35. 35.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  36. 36.Which of these usually has a microcontroller inside? (a) a TV remote (b) a bicycle bell (c) a candle (d) a plain wall switch
  37. 37.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  38. 38.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a hand pump (c) a bicycle bell (d) a spinning top
  39. 39.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  40. 40.Which job is done by the reset button? (a) connect sensors and LEDs (b) runs the program (c) restarts the program (d) brings power and code

Answer key

  1. the main chip
  2. False
  3. No
  4. True
  5. False
  6. a smart watch
  7. True
  8. Yes
  9. True
  10. True
  11. True
  12. a microwave oven
  13. microcontroller
  14. runs the program
  15. USB or a 9 V battery
  16. True
  17. the reset button
  18. Yes
  19. brings power and code
  20. flash memory
  21. a computer on one chip
  22. a wind-up toy
  23. No
  24. uploaded over USB
  25. No
  26. a candle
  27. a bicycle bell
  28. the USB port
  29. False
  30. it starts again
  31. True
  32. microcontroller
  33. False
  34. a toy robot
  35. Yes
  36. a TV remote
  37. False
  38. a digital alarm clock
  39. False
  40. restarts the program

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