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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 372 · 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.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the USB cable (d) the resistor
  2. 2.True or false: a microcontroller needs much more power. (a) False (b) True
  3. 3.Which job is done by the USB port? (a) restarts the program (b) runs the program (c) brings power and code (d) shows the board is on
  4. 4.Which job is done by the pins? (a) runs the program (b) brings power and code (c) connect sensors and LEDs (d) shows the board is on
  5. 5.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) a wall socket directly (d) USB or a 9 V battery
  6. 6.Which of these has no microcontroller inside? (a) a toy robot (b) a smart watch (c) a TV remote (d) a plain wall switch
  7. 7.Which of these usually has a microcontroller inside? (a) a candle (b) a smart watch (c) a spinning top (d) a wind-up toy
  8. 8.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  9. 9.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a hand pump (c) a washing machine (d) a wind-up toy
  10. 10.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  11. 11.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  12. 12.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  13. 13.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  14. 14.Which job is done by the voltage regulator? (a) runs the program (b) keeps the voltage steady (c) shows the board is on (d) connect sensors and LEDs
  15. 15.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a toy robot (d) a wind-up toy
  16. 16.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the pins (c) the reset button (d) the voltage regulator
  17. 17.🤖 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
  18. 18.Which job is done by the power LED? (a) keeps the voltage steady (b) restarts the program (c) shows the board is on (d) brings power and code
  19. 19.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  20. 20.True or false: a microcontroller uses very little power. (a) False (b) True
  21. 21.Which job is done by the reset button? (a) connect sensors and LEDs (b) restarts the program (c) brings power and code (d) keeps the voltage steady
  22. 22.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  23. 23.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the main chip (c) the power LED (d) the reset button
  24. 24.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  25. 25.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  26. 26.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the USB port (c) the main chip (d) the pins
  27. 27.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  28. 28.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  29. 29.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  30. 30.True or false: a microcontroller has no screen of its own. (a) True (b) False
  31. 31.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  32. 32.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  33. 33.True or false: a laptop has no screen of its own. (a) True (b) False
  34. 34.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  35. 35.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the power LED (c) the reset button (d) the pins
  36. 36.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  37. 37.🤖 What is a microcontroller? (a) a computer on one chip (b) a type of battery (c) a big desktop computer (d) a kind of bulb
  38. 38.Which job is done by the main chip? (a) restarts the program (b) shows the board is on (c) runs the program (d) brings power and code
  39. 39.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  40. 40.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a TV remote (d) a hand pump

Answer key

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

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