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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 103 · 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 usually has a microcontroller inside? (a) a wind-up toy (b) a plain wall switch (c) a bicycle bell (d) a microwave oven
  2. 2.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the USB port (c) the main chip (d) the pins
  3. 3.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  4. 4.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a smart watch (d) a candle
  5. 5.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  6. 6.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the power LED (c) the reset button (d) the pins
  7. 7.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  8. 8.Which job is done by the USB port? (a) brings power and code (b) connect sensors and LEDs (c) runs the program (d) restarts the program
  9. 9.True or false: a laptop has no screen of its own. (a) True (b) False
  10. 10.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a washing machine (c) a plain wall switch (d) a hand pump
  11. 11.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the power LED (c) the USB port (d) the voltage regulator
  12. 12.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
  13. 13.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  14. 14.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  15. 15.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  16. 16.🤖 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
  17. 17.Which job is done by the pins? (a) restarts the program (b) brings power and code (c) connect sensors and LEDs (d) shows the board is on
  18. 18.True or false: a microcontroller has no screen of its own. (a) False (b) True
  19. 19.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  20. 20.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the pins (c) the main chip (d) the power LED
  21. 21.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the power LED (c) the voltage regulator (d) the USB port
  22. 22.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  23. 23.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a digital thermometer (d) a hand pump
  24. 24.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  25. 25.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  26. 26.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  27. 27.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  28. 28.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a spinning top (c) a digital alarm clock (d) a bicycle bell
  29. 29.True or false: a laptop has a built-in keyboard. (a) False (b) True
  30. 30.True or false: a laptop uses very little power. (a) True (b) False
  31. 31.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  32. 32.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) bare mains wires (d) a wall socket directly
  33. 33.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  34. 34.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) flash memory (d) the resistor
  35. 35.True or false: a laptop runs one small program. (a) False (b) True
  36. 36.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  37. 37.Which job is done by the main chip? (a) brings power and code (b) runs the program (c) shows the board is on (d) restarts the program
  38. 38.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the USB port (c) the power LED (d) the pins
  39. 39.Which of these has no microcontroller inside? (a) a smart watch (b) a spinning top (c) a TV remote (d) a washing machine
  40. 40.True or false: a microcontroller uses very little power. (a) True (b) False

Answer key

  1. a microwave oven
  2. the pins
  3. True
  4. a candle
  5. False
  6. the reset button
  7. laptop
  8. brings power and code
  9. False
  10. a washing machine
  11. the voltage regulator
  12. uploaded over USB
  13. False
  14. Yes
  15. No
  16. it starts again
  17. connect sensors and LEDs
  18. True
  19. False
  20. the main chip
  21. the USB port
  22. No
  23. a hand pump
  24. laptop
  25. microcontroller
  26. Yes
  27. Yes
  28. a digital alarm clock
  29. True
  30. False
  31. No
  32. USB or a 9 V battery
  33. True
  34. flash memory
  35. False
  36. False
  37. runs the program
  38. the power LED
  39. a spinning top
  40. True

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