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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 510 · 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 is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a wall socket directly (d) a 230 V cable
  2. 2.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  3. 3.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  4. 4.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) sent by sound (d) drawn with a pen
  5. 5.Which job is done by the main chip? (a) restarts the program (b) runs the program (c) brings power and code (d) keeps the voltage steady
  6. 6.True or false: a microcontroller needs much more power. (a) False (b) True
  7. 7.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  8. 8.True or false: a laptop runs many apps at once. (a) True (b) False
  9. 9.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a toy robot (c) a candle (d) a bicycle bell
  10. 10.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the reset button (c) the USB port (d) the voltage regulator
  11. 11.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  12. 12.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  13. 13.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  14. 14.Which job is done by the USB port? (a) brings power and code (b) shows the board is on (c) restarts the program (d) runs the program
  15. 15.Which job is done by the voltage regulator? (a) runs the program (b) restarts the program (c) brings power and code (d) keeps the voltage steady
  16. 16.True or false: a microcontroller uses very little power. (a) False (b) True
  17. 17.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  18. 18.Which job is done by the power LED? (a) runs the program (b) shows the board is on (c) brings power and code (d) connect sensors and LEDs
  19. 19.Which of these usually has a microcontroller inside? (a) a washing machine (b) a spinning top (c) a hand pump (d) a bicycle bell
  20. 20.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  21. 21.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) the board breaks (d) it deletes itself
  22. 22.True or false: a laptop needs much more power. (a) True (b) False
  23. 23.True or false: a laptop has no screen of its own. (a) True (b) False
  24. 24.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  25. 25.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  26. 26.True or false: a laptop uses very little power. (a) True (b) False
  27. 27.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a wind-up toy (d) a washing machine
  28. 28.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the reset button (c) the voltage regulator (d) the USB port
  29. 29.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) flash memory (d) the resistor
  30. 30.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital thermometer (c) a bicycle bell (d) a plain wall switch
  31. 31.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  32. 32.Which job is done by the pins? (a) brings power and code (b) connect sensors and LEDs (c) keeps the voltage steady (d) runs the program
  33. 33.True or false: a microcontroller has no screen of its own. (a) False (b) True
  34. 34.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  35. 35.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  36. 36.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the main chip (c) the power LED (d) the reset button
  37. 37.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  38. 38.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  39. 39.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  40. 40.True or false: a laptop has a built-in keyboard. (a) False (b) True

Answer key

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

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