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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 414 · 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.

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

Answer key

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

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