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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 326 · 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.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a big desktop computer (d) a computer on one chip
  2. 2.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it deletes itself (d) it starts again
  3. 3.Which of these has no microcontroller inside? (a) a digital thermometer (b) a TV remote (c) a candle (d) a microwave oven
  4. 4.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the reset button (c) the pins (d) the voltage regulator
  5. 5.True or false: a microcontroller uses very little power. (a) False (b) True
  6. 6.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  7. 7.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  8. 8.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the power LED (c) the reset button (d) the USB port
  9. 9.Which of these has no microcontroller inside? (a) a spinning top (b) a digital thermometer (c) a smart watch (d) a washing machine
  10. 10.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  11. 11.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  12. 12.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the pins (c) the USB port (d) the main chip
  13. 13.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  14. 14.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  15. 15.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  16. 16.True or false: a microcontroller needs much more power. (a) True (b) False
  17. 17.Which job is done by the voltage regulator? (a) restarts the program (b) shows the board is on (c) connect sensors and LEDs (d) keeps the voltage steady
  18. 18.True or false: a spinning top has no microcontroller inside. (a) True (b) False
  19. 19.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a hand pump (c) a digital thermometer (d) a wind-up toy
  20. 20.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  21. 21.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) a wall socket directly (c) USB or a 9 V battery (d) bare mains wires
  22. 22.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  23. 23.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  24. 24.True or false: a laptop uses very little power. (a) False (b) True
  25. 25.True or false: a laptop has a built-in keyboard. (a) False (b) True
  26. 26.Which job is done by the reset button? (a) brings power and code (b) keeps the voltage steady (c) shows the board is on (d) restarts the program
  27. 27.Which job is done by the main chip? (a) restarts the program (b) connect sensors and LEDs (c) brings power and code (d) runs the program
  28. 28.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  29. 29.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  30. 30.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the reset button (c) the voltage regulator (d) the USB port
  31. 31.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  32. 32.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  33. 33.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  34. 34.True or false: a laptop needs much more power. (a) False (b) True
  35. 35.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the pins (c) the main chip (d) the USB port
  36. 36.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  37. 37.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the voltage regulator (c) the pins (d) the main chip
  38. 38.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  39. 39.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a hand pump (d) a toy robot
  40. 40.Which job is done by the power LED? (a) restarts the program (b) shows the board is on (c) runs the program (d) keeps the voltage steady

Answer key

  1. a computer on one chip
  2. it starts again
  3. a candle
  4. the reset button
  5. True
  6. microcontroller
  7. laptop
  8. the power LED
  9. a spinning top
  10. No
  11. False
  12. the pins
  13. False
  14. True
  15. microcontroller
  16. False
  17. keeps the voltage steady
  18. True
  19. a digital thermometer
  20. Yes
  21. USB or a 9 V battery
  22. Yes
  23. True
  24. False
  25. True
  26. restarts the program
  27. runs the program
  28. True
  29. False
  30. the USB port
  31. microcontroller
  32. Yes
  33. False
  34. True
  35. the main chip
  36. False
  37. the voltage regulator
  38. No
  39. a toy robot
  40. shows the board is on

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