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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 99 · 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 big desktop computer (b) a computer on one chip (c) a type of battery (d) a kind of bulb
  2. 2.🤖 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
  3. 3.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  4. 4.True or false: a laptop has a built-in keyboard. (a) True (b) False
  5. 5.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  6. 6.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the power LED (c) the main chip (d) the pins
  7. 7.Which job is done by the main chip? (a) brings power and code (b) runs the program (c) restarts the program (d) connect sensors and LEDs
  8. 8.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  9. 9.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the main chip (c) the power LED (d) the voltage regulator
  10. 10.True or false: a laptop needs much more power. (a) True (b) False
  11. 11.Which job is done by the USB port? (a) runs the program (b) shows the board is on (c) restarts the program (d) brings power and code
  12. 12.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  13. 13.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  14. 14.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  15. 15.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  16. 16.Which of these has no microcontroller inside? (a) a wind-up toy (b) a digital thermometer (c) a microwave oven (d) a digital alarm clock
  17. 17.True or false: a laptop runs many apps at once. (a) False (b) True
  18. 18.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the power LED (c) the main chip (d) the reset button
  19. 19.Which of these has no microcontroller inside? (a) a microwave oven (b) a candle (c) a smart watch (d) a digital thermometer
  20. 20.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it stops forever (d) it deletes itself
  21. 21.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  22. 22.True or false: a microcontroller runs many apps at once. (a) False (b) True
  23. 23.Which of these has no microcontroller inside? (a) a digital thermometer (b) a smart watch (c) a digital alarm clock (d) a hand pump
  24. 24.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  25. 25.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  26. 26.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a plain wall switch (d) a smart watch
  27. 27.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a TV remote (c) a microwave oven (d) a spinning top
  28. 28.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the power LED (d) the USB cable
  29. 29.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  30. 30.Which job is done by the power LED? (a) brings power and code (b) keeps the voltage steady (c) runs the program (d) shows the board is on
  31. 31.Which of these usually has a microcontroller inside? (a) a TV remote (b) a wind-up toy (c) a bicycle bell (d) a hand pump
  32. 32.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  33. 33.Which job is done by the pins? (a) keeps the voltage steady (b) restarts the program (c) brings power and code (d) connect sensors and LEDs
  34. 34.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the reset button (c) the USB port (d) the voltage regulator
  35. 35.True or false: a microcontroller has no screen of its own. (a) False (b) True
  36. 36.True or false: a microcontroller needs much more power. (a) True (b) False
  37. 37.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  38. 38.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  39. 39.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  40. 40.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True

Answer key

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

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