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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 334 · 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.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) the board breaks (c) it stops forever (d) it deletes itself
  2. 2.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  3. 3.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  4. 4.Which of these usually has a microcontroller inside? (a) a washing machine (b) a spinning top (c) a plain wall switch (d) a candle
  5. 5.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the power LED (c) the voltage regulator (d) the USB port
  6. 6.Which job is done by the power LED? (a) restarts the program (b) shows the board is on (c) brings power and code (d) runs the program
  7. 7.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  8. 8.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  9. 9.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the USB port (c) the pins (d) the power LED
  10. 10.Which job is done by the main chip? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) runs the program
  11. 11.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a candle (c) a wind-up toy (d) a smart watch
  12. 12.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  13. 13.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  14. 14.True or false: a candle has no microcontroller inside. (a) False (b) True
  15. 15.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the main chip (c) the voltage regulator (d) the USB port
  16. 16.Which job is done by the pins? (a) keeps the voltage steady (b) connect sensors and LEDs (c) restarts the program (d) runs the program
  17. 17.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  18. 18.True or false: a laptop needs much more power. (a) True (b) False
  19. 19.True or false: a laptop has no screen of its own. (a) False (b) True
  20. 20.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the reset button (c) the power LED (d) the USB port
  21. 21.True or false: a microcontroller needs much more power. (a) True (b) False
  22. 22.🤖 What is a microcontroller? (a) a computer on one chip (b) a kind of bulb (c) a big desktop computer (d) a type of battery
  23. 23.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  24. 24.Which of these has no microcontroller inside? (a) a digital thermometer (b) a digital alarm clock (c) a TV remote (d) a plain wall switch
  25. 25.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a wind-up toy (c) a toy robot (d) a microwave oven
  26. 26.Which job is done by the USB port? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) restarts the program
  27. 27.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the USB port (c) the pins (d) the reset button
  28. 28.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  29. 29.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  30. 30.Which of these has no microcontroller inside? (a) a TV remote (b) a hand pump (c) a digital alarm clock (d) a digital thermometer
  31. 31.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) flash memory (c) the power LED (d) the USB cable
  32. 32.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  33. 33.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the main chip (c) the reset button (d) the pins
  34. 34.True or false: a microcontroller runs one small program. (a) False (b) True
  35. 35.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  36. 36.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) USB or a 9 V battery (d) a wall socket directly
  37. 37.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  38. 38.Which of these usually has a microcontroller inside? (a) a toy robot (b) a bicycle bell (c) a candle (d) a plain wall switch
  39. 39.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a hand pump (c) a wind-up toy (d) a spinning top
  40. 40.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop

Answer key

  1. it starts again
  2. No
  3. microcontroller
  4. a washing machine
  5. the power LED
  6. shows the board is on
  7. False
  8. False
  9. the pins
  10. runs the program
  11. a smart watch
  12. False
  13. microcontroller
  14. True
  15. the voltage regulator
  16. connect sensors and LEDs
  17. microcontroller
  18. True
  19. False
  20. the USB port
  21. False
  22. a computer on one chip
  23. True
  24. a plain wall switch
  25. a wind-up toy
  26. brings power and code
  27. the main chip
  28. True
  29. False
  30. a hand pump
  31. flash memory
  32. laptop
  33. the reset button
  34. True
  35. No
  36. USB or a 9 V battery
  37. False
  38. a toy robot
  39. a digital alarm clock
  40. laptop

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