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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 523 · 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.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  2. 2.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the reset button (c) the power LED (d) the voltage regulator
  3. 3.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  4. 4.True or false: a microcontroller runs one small program. (a) False (b) True
  5. 5.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  6. 6.Which of these usually has a microcontroller inside? (a) a smart watch (b) a wind-up toy (c) a bicycle bell (d) a hand pump
  7. 7.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) restarts the program (d) runs the program
  8. 8.True or false: a microcontroller needs much more power. (a) False (b) True
  9. 9.Which job is done by the reset button? (a) connect sensors and LEDs (b) keeps the voltage steady (c) restarts the program (d) brings power and code
  10. 10.🤖 What is a microcontroller? (a) a big desktop computer (b) a computer on one chip (c) a type of battery (d) a kind of bulb
  11. 11.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  12. 12.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the USB port (c) the voltage regulator (d) the power LED
  13. 13.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  14. 14.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  15. 15.Which job is done by the USB port? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) shows the board is on
  16. 16.True or false: a laptop runs many apps at once. (a) False (b) True
  17. 17.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) drawn with a pen (d) uploaded over USB
  18. 18.Which of these has no microcontroller inside? (a) a plain wall switch (b) a digital alarm clock (c) a washing machine (d) a digital thermometer
  19. 19.Which of these has no microcontroller inside? (a) a smart watch (b) a microwave oven (c) a wind-up toy (d) a TV remote
  20. 20.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  21. 21.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the voltage regulator (c) the power LED (d) the main chip
  22. 22.Which of these has no microcontroller inside? (a) a microwave oven (b) a toy robot (c) a TV remote (d) a bicycle bell
  23. 23.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) it deletes itself (d) the board breaks
  24. 24.Which of these has no microcontroller inside? (a) a smart watch (b) a microwave oven (c) a hand pump (d) a washing machine
  25. 25.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  26. 26.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  27. 27.True or false: a laptop runs one small program. (a) False (b) True
  28. 28.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  29. 29.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  30. 30.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  31. 31.Which job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) connect sensors and LEDs (d) shows the board is on
  32. 32.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  33. 33.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
  34. 34.Which of these has no microcontroller inside? (a) a spinning top (b) a toy robot (c) a microwave oven (d) a washing machine
  35. 35.True or false: a microcontroller has no screen of its own. (a) False (b) True
  36. 36.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
  37. 37.🤖 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
  38. 38.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  39. 39.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the voltage regulator (c) the USB port (d) the power LED
  40. 40.True or false: a microcontroller uses very little power. (a) False (b) True

Answer key

  1. No
  2. the voltage regulator
  3. laptop
  4. True
  5. True
  6. a smart watch
  7. keeps the voltage steady
  8. False
  9. restarts the program
  10. a computer on one chip
  11. False
  12. the USB port
  13. Yes
  14. Yes
  15. brings power and code
  16. True
  17. uploaded over USB
  18. a plain wall switch
  19. a wind-up toy
  20. True
  21. the main chip
  22. a bicycle bell
  23. it starts again
  24. a hand pump
  25. Yes
  26. No
  27. False
  28. No
  29. False
  30. No
  31. runs the program
  32. laptop
  33. False
  34. a spinning top
  35. True
  36. USB or a 9 V battery
  37. flash memory
  38. False
  39. the reset button
  40. True

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