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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 396 · 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 washing machine usually have a microcontroller inside? (a) No (b) Yes
  2. 2.Which job is done by the voltage regulator? (a) restarts the program (b) brings power and code (c) shows the board is on (d) keeps the voltage steady
  3. 3.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the pins (c) the voltage regulator (d) the main chip
  4. 4.Which job is done by the pins? (a) runs the program (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
  5. 5.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  6. 6.Which of these usually has a microcontroller inside? (a) a TV remote (b) a bicycle bell (c) a wind-up toy (d) a hand pump
  7. 7.Which of these has no microcontroller inside? (a) a smart watch (b) a digital alarm clock (c) a plain wall switch (d) a TV remote
  8. 8.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  9. 9.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
  10. 10.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  11. 11.True or false: a laptop has a built-in keyboard. (a) False (b) True
  12. 12.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  13. 13.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a candle (c) a washing machine (d) a digital thermometer
  14. 14.True or false: a laptop runs many apps at once. (a) False (b) True
  15. 15.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  16. 16.Which of these has no microcontroller inside? (a) a bicycle bell (b) a microwave oven (c) a TV remote (d) a digital alarm clock
  17. 17.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  18. 18.Which job is done by the reset button? (a) runs the program (b) keeps the voltage steady (c) brings power and code (d) restarts the program
  19. 19.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  20. 20.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the reset button (c) the pins (d) the USB port
  21. 21.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  22. 22.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  23. 23.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a plain wall switch (d) a hand pump
  24. 24.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the power LED (c) the USB port (d) the pins
  25. 25.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a bicycle bell (d) a plain wall switch
  26. 26.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  27. 27.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a kind of bulb (d) a computer on one chip
  28. 28.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  29. 29.True or false: a microcontroller needs much more power. (a) False (b) True
  30. 30.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  31. 31.True or false: a laptop has no screen of its own. (a) True (b) False
  32. 32.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it starts again (d) it stops forever
  33. 33.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) USB or a 9 V battery (d) a 230 V cable
  34. 34.True or false: a microcontroller uses very little power. (a) True (b) False
  35. 35.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  36. 36.Which of these has no microcontroller inside? (a) a microwave oven (b) a smart watch (c) a wind-up toy (d) a digital alarm clock
  37. 37.Which job is done by the main chip? (a) connect sensors and LEDs (b) brings power and code (c) runs the program (d) keeps the voltage steady
  38. 38.Which job is done by the USB port? (a) connect sensors and LEDs (b) shows the board is on (c) keeps the voltage steady (d) brings power and code
  39. 39.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  40. 40.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True

Answer key

  1. Yes
  2. keeps the voltage steady
  3. the power LED
  4. connect sensors and LEDs
  5. No
  6. a TV remote
  7. a plain wall switch
  8. laptop
  9. uploaded over USB
  10. False
  11. True
  12. laptop
  13. a candle
  14. True
  15. True
  16. a bicycle bell
  17. True
  18. restarts the program
  19. False
  20. the USB port
  21. False
  22. microcontroller
  23. a digital thermometer
  24. the voltage regulator
  25. a microwave oven
  26. No
  27. a computer on one chip
  28. No
  29. False
  30. True
  31. False
  32. it starts again
  33. USB or a 9 V battery
  34. True
  35. Yes
  36. a wind-up toy
  37. runs the program
  38. brings power and code
  39. Yes
  40. False

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