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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 486 · 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 job is done by the USB port? (a) restarts the program (b) keeps the voltage steady (c) brings power and code (d) connect sensors and LEDs
  2. 2.🤖 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
  3. 3.Which of these has no microcontroller inside? (a) a toy robot (b) a smart watch (c) a hand pump (d) a microwave oven
  4. 4.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a plain wall switch (d) a washing machine
  5. 5.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a spinning top (c) a digital alarm clock (d) a candle
  6. 6.Which job is done by the main chip? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) runs the program
  7. 7.Which of these has no microcontroller inside? (a) a candle (b) a digital thermometer (c) a smart watch (d) a toy robot
  8. 8.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a TV remote (c) a spinning top (d) a hand pump
  9. 9.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  10. 10.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  11. 11.True or false: a microcontroller runs one small program. (a) False (b) True
  12. 12.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the voltage regulator (c) the reset button (d) the main chip
  13. 13.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  14. 14.True or false: a microcontroller needs much more power. (a) False (b) True
  15. 15.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the USB cable (d) the power LED
  16. 16.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) sent by sound (d) drawn with a pen
  17. 17.Which of these has no microcontroller inside? (a) a washing machine (b) a bicycle bell (c) a digital alarm clock (d) a microwave oven
  18. 18.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  19. 19.Which job is done by the power LED? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  20. 20.Which job is done by the voltage regulator? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) restarts the program
  21. 21.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  22. 22.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the power LED (d) the main chip
  23. 23.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) USB or a 9 V battery (c) bare mains wires (d) a wall socket directly
  24. 24.Which job is done by the reset button? (a) brings power and code (b) keeps the voltage steady (c) runs the program (d) restarts the program
  25. 25.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the reset button (c) the power LED (d) the USB port
  26. 26.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  27. 27.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  28. 28.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  29. 29.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the main chip (c) the USB port (d) the pins
  30. 30.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  31. 31.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  32. 32.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a spinning top (d) a hand pump
  33. 33.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  34. 34.Which job is done by the pins? (a) keeps the voltage steady (b) connect sensors and LEDs (c) shows the board is on (d) runs the program
  35. 35.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  36. 36.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  37. 37.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  38. 38.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  39. 39.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  40. 40.True or false: a laptop has a built-in keyboard. (a) False (b) True

Answer key

  1. brings power and code
  2. it starts again
  3. a hand pump
  4. a washing machine
  5. a digital alarm clock
  6. runs the program
  7. a candle
  8. a TV remote
  9. False
  10. Yes
  11. True
  12. the reset button
  13. No
  14. False
  15. flash memory
  16. uploaded over USB
  17. a bicycle bell
  18. No
  19. shows the board is on
  20. keeps the voltage steady
  21. microcontroller
  22. the voltage regulator
  23. USB or a 9 V battery
  24. restarts the program
  25. the power LED
  26. False
  27. True
  28. False
  29. the pins
  30. False
  31. No
  32. a microwave oven
  33. True
  34. connect sensors and LEDs
  35. microcontroller
  36. False
  37. laptop
  38. Yes
  39. microcontroller
  40. True

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