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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 124 · 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 plain wall switch has no microcontroller inside. (a) True (b) False
  2. 2.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  3. 3.Which job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) shows the board is on (d) restarts the program
  4. 4.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the pins (c) the main chip (d) the reset button
  5. 5.Which job is done by the USB port? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) connect sensors and LEDs
  6. 6.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a microwave oven (d) a hand pump
  7. 7.Which of these has no microcontroller inside? (a) a washing machine (b) a TV remote (c) a toy robot (d) a wind-up toy
  8. 8.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a digital thermometer (d) a hand pump
  9. 9.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  10. 10.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  11. 11.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  12. 12.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the USB port (c) the voltage regulator (d) the pins
  13. 13.Which job is done by the reset button? (a) shows the board is on (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
  14. 14.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  15. 15.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  16. 16.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the resistor (d) the USB cable
  17. 17.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) restarts the program (d) runs the program
  18. 18.True or false: a microcontroller uses very little power. (a) True (b) False
  19. 19.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  20. 20.True or false: a laptop runs one small program. (a) False (b) True
  21. 21.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  22. 22.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  23. 23.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  24. 24.True or false: a microcontroller has no screen of its own. (a) True (b) False
  25. 25.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a washing machine (d) a hand pump
  26. 26.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  27. 27.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  28. 28.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  29. 29.Which of these has no microcontroller inside? (a) a candle (b) a digital alarm clock (c) a microwave oven (d) a smart watch
  30. 30.True or false: a laptop needs much more power. (a) True (b) False
  31. 31.Which job is done by the power LED? (a) keeps the voltage steady (b) shows the board is on (c) brings power and code (d) restarts the program
  32. 32.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  33. 33.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a microwave oven (d) a spinning top
  34. 34.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the voltage regulator (c) the reset button (d) the main chip
  35. 35.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  36. 36.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it deletes itself (d) it stops forever
  37. 37.True or false: a laptop uses very little power. (a) True (b) False
  38. 38.Which job is done by the pins? (a) keeps the voltage steady (b) connect sensors and LEDs (c) restarts the program (d) runs the program
  39. 39.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a wall socket directly (d) a 230 V cable
  40. 40.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the pins (c) the main chip (d) the reset button

Answer key

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

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