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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 582 · 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.Which of these has no microcontroller inside? (a) a candle (b) a TV remote (c) a digital thermometer (d) a washing machine
  2. 2.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  3. 3.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  4. 4.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  5. 5.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the pins (c) the main chip (d) the USB port
  6. 6.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  7. 7.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the reset button (c) the voltage regulator (d) the power LED
  8. 8.Which of these has no microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a digital alarm clock (d) a microwave oven
  9. 9.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  10. 10.True or false: a digital thermometer 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.True or false: a laptop runs one small program. (a) False (b) True
  13. 13.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  14. 14.Which job is done by the reset button? (a) restarts the program (b) keeps the voltage steady (c) runs the program (d) connect sensors and LEDs
  15. 15.True or false: a microcontroller runs many apps at once. (a) True (b) False
  16. 16.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a plain wall switch (c) a smart watch (d) a spinning top
  17. 17.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) flash memory (d) the power LED
  18. 18.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  19. 19.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital alarm clock (c) a candle (d) a spinning top
  20. 20.Which job is done by the voltage regulator? (a) restarts the program (b) runs the program (c) keeps the voltage steady (d) connect sensors and LEDs
  21. 21.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  22. 22.True or false: a laptop needs much more power. (a) True (b) False
  23. 23.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the voltage regulator (c) the power LED (d) the USB port
  24. 24.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  25. 25.Which of these usually has a microcontroller inside? (a) a toy robot (b) a wind-up toy (c) a spinning top (d) a candle
  26. 26.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a hand pump (d) a candle
  27. 27.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  28. 28.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  29. 29.Which job is done by the power LED? (a) restarts the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) shows the board is on
  30. 30.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  31. 31.Which job is done by the USB port? (a) brings power and code (b) runs the program (c) connect sensors and LEDs (d) restarts the program
  32. 32.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) the board breaks (d) it stops forever
  33. 33.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the pins (c) the reset button (d) the voltage regulator
  34. 34.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  35. 35.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a 230 V cable (d) a wall socket directly
  36. 36.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  37. 37.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  38. 38.Which job is done by the pins? (a) restarts the program (b) brings power and code (c) connect sensors and LEDs (d) runs the program
  39. 39.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a candle (d) a digital thermometer
  40. 40.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False

Answer key

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

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