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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 352 · 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.True or false: a laptop runs one small program. (a) True (b) False
  2. 2.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  3. 3.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the resistor (d) the USB cable
  4. 4.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the voltage regulator (c) the reset button (d) the power LED
  5. 5.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  6. 6.Which job is done by the power LED? (a) runs the program (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  7. 7.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  8. 8.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  9. 9.Which of these usually has a microcontroller inside? (a) a hand pump (b) a spinning top (c) a digital alarm clock (d) a wind-up toy
  10. 10.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  11. 11.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the voltage regulator (c) the pins (d) the power LED
  12. 12.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) sent by sound (d) uploaded over USB
  13. 13.True or false: a laptop has a built-in keyboard. (a) False (b) True
  14. 14.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  15. 15.True or false: a laptop uses very little power. (a) False (b) True
  16. 16.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the reset button (c) the power LED (d) the voltage regulator
  17. 17.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  18. 18.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the voltage regulator (c) the USB port (d) the reset button
  19. 19.True or false: a spinning top has no microcontroller inside. (a) True (b) False
  20. 20.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a candle (d) a digital thermometer
  21. 21.Which of these has no microcontroller inside? (a) a microwave oven (b) a bicycle bell (c) a smart watch (d) a TV remote
  22. 22.Which of these has no microcontroller inside? (a) a TV remote (b) a plain wall switch (c) a digital alarm clock (d) a toy robot
  23. 23.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it stops forever (d) it starts again
  24. 24.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  25. 25.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a spinning top (c) a smart watch (d) a microwave oven
  26. 26.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  27. 27.True or false: a candle has no microcontroller inside. (a) False (b) True
  28. 28.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  29. 29.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  30. 30.Which job is done by the pins? (a) shows the board is on (b) restarts the program (c) brings power and code (d) connect sensors and LEDs
  31. 31.Which of these has no microcontroller inside? (a) a microwave oven (b) a washing machine (c) a candle (d) a smart watch
  32. 32.Which job is done by the USB port? (a) runs the program (b) connect sensors and LEDs (c) restarts the program (d) brings power and code
  33. 33.Which job is done by the voltage regulator? (a) restarts the program (b) runs the program (c) brings power and code (d) keeps the voltage steady
  34. 34.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
  35. 35.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  36. 36.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  37. 37.True or false: a microcontroller uses very little power. (a) False (b) True
  38. 38.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) USB or a 9 V battery (d) a wall socket directly
  39. 39.Which of these usually has a microcontroller inside? (a) a TV remote (b) a candle (c) a wind-up toy (d) a plain wall switch
  40. 40.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop

Answer key

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

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