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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 704 · 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.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it starts again (d) it stops forever
  2. 2.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  3. 3.True or false: a microcontroller needs much more power. (a) True (b) False
  4. 4.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  5. 5.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  6. 6.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  7. 7.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
  8. 8.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  9. 9.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a smart watch (d) a wind-up toy
  10. 10.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the pins (c) the reset button (d) the USB port
  11. 11.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  12. 12.Which of these has no microcontroller inside? (a) a smart watch (b) a digital thermometer (c) a candle (d) a toy robot
  13. 13.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the USB port (c) the reset button (d) the pins
  14. 14.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a bicycle bell (c) a candle (d) a spinning top
  15. 15.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  16. 16.🤖 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
  17. 17.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  18. 18.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the USB port (c) the voltage regulator (d) the main chip
  19. 19.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the power LED (c) the reset button (d) the voltage regulator
  20. 20.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  21. 21.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the USB cable (d) the resistor
  22. 22.Which job is done by the main chip? (a) shows the board is on (b) restarts the program (c) runs the program (d) connect sensors and LEDs
  23. 23.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  24. 24.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  25. 25.Which of these has no microcontroller inside? (a) a hand pump (b) a toy robot (c) a TV remote (d) a microwave oven
  26. 26.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  27. 27.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a microwave oven (c) a spinning top (d) a digital thermometer
  28. 28.True or false: a microcontroller uses very little power. (a) False (b) True
  29. 29.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the voltage regulator (c) the reset button (d) the USB port
  30. 30.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  31. 31.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  32. 32.Which of these usually has a microcontroller inside? (a) a spinning top (b) a toy robot (c) a plain wall switch (d) a hand pump
  33. 33.Which job is done by the reset button? (a) restarts the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) brings power and code
  34. 34.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  35. 35.True or false: a laptop runs one small program. (a) True (b) False
  36. 36.Which job is done by the USB port? (a) brings power and code (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  37. 37.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) typed on the chip (d) uploaded over USB
  38. 38.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the power LED (c) the main chip (d) the USB port
  39. 39.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  40. 40.True or false: a laptop needs much more power. (a) False (b) True

Answer key

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

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