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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 157 · 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.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  2. 2.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  3. 3.Which job is done by the reset button? (a) keeps the voltage steady (b) brings power and code (c) runs the program (d) restarts the program
  4. 4.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the power LED (d) the pins
  5. 5.Which job is done by the pins? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) runs the program
  6. 6.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  7. 7.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  8. 8.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the USB port (c) the pins (d) the power LED
  9. 9.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  10. 10.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a digital thermometer (c) a candle (d) a bicycle bell
  11. 11.True or false: a laptop uses very little power. (a) True (b) False
  12. 12.Which of these has no microcontroller inside? (a) a digital thermometer (b) a washing machine (c) a hand pump (d) a smart watch
  13. 13.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  14. 14.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the pins (c) the main chip (d) the voltage regulator
  15. 15.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a TV remote (c) a wind-up toy (d) a microwave oven
  16. 16.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  17. 17.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the reset button (c) the pins (d) the voltage regulator
  18. 18.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a type of battery (d) a computer on one chip
  19. 19.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  20. 20.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) bare mains wires (d) a 230 V cable
  21. 21.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a washing machine (c) a bicycle bell (d) a wind-up toy
  22. 22.True or false: a laptop runs one small program. (a) True (b) False
  23. 23.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the main chip (c) the power LED (d) the USB port
  24. 24.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  25. 25.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  26. 26.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  27. 27.Which job is done by the USB port? (a) runs the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) brings power and code
  28. 28.Which job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) connect sensors and LEDs (d) restarts the program
  29. 29.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  30. 30.True or false: a spinning top has no microcontroller inside. (a) True (b) False
  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.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  33. 33.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  34. 34.Which job is done by the power LED? (a) runs the program (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
  35. 35.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  36. 36.True or false: a microcontroller runs many apps at once. (a) True (b) False
  37. 37.Which job is done by the voltage regulator? (a) brings power and code (b) restarts the program (c) runs the program (d) keeps the voltage steady
  38. 38.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  39. 39.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the pins (c) the voltage regulator (d) the power LED
  40. 40.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a spinning top (d) a candle

Answer key

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

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