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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 504 · 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.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  2. 2.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  3. 3.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  4. 4.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the main chip (c) the USB port (d) the voltage regulator
  5. 5.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the main chip (c) the pins (d) the voltage regulator
  6. 6.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  7. 7.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  8. 8.Which job is done by the main chip? (a) connect sensors and LEDs (b) keeps the voltage steady (c) shows the board is on (d) runs the program
  9. 9.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🤖 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
  11. 11.True or false: a laptop runs one small program. (a) False (b) True
  12. 12.True or false: a laptop has no screen of its own. (a) False (b) True
  13. 13.True or false: a candle has no microcontroller inside. (a) False (b) True
  14. 14.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) uploaded over USB (d) sent by sound
  15. 15.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the USB cable (c) the resistor (d) the power LED
  16. 16.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  17. 17.Which of these has no microcontroller inside? (a) a digital thermometer (b) a bicycle bell (c) a TV remote (d) a toy robot
  18. 18.Which of these has no microcontroller inside? (a) a spinning top (b) a smart watch (c) a washing machine (d) a TV remote
  19. 19.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a smart watch (d) a candle
  20. 20.Which job is done by the power LED? (a) runs the program (b) shows the board is on (c) brings power and code (d) restarts the program
  21. 21.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  22. 22.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  23. 23.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it starts again (d) it deletes itself
  24. 24.Which job is done by the USB port? (a) brings power and code (b) shows the board is on (c) connect sensors and LEDs (d) keeps the voltage steady
  25. 25.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the USB port (c) the voltage regulator (d) the reset button
  26. 26.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  27. 27.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  28. 28.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  29. 29.True or false: a laptop uses very little power. (a) False (b) True
  30. 30.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a spinning top (d) a digital alarm clock
  31. 31.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the main chip (c) the voltage regulator (d) the pins
  32. 32.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  33. 33.Which job is done by the pins? (a) keeps the voltage steady (b) connect sensors and LEDs (c) brings power and code (d) runs the program
  34. 34.True or false: a microcontroller runs many apps at once. (a) True (b) False
  35. 35.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  36. 36.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  37. 37.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  38. 38.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) keeps the voltage steady (c) shows the board is on (d) restarts the program
  39. 39.True or false: a microcontroller needs much more power. (a) False (b) True
  40. 40.Which of these has no microcontroller inside? (a) a hand pump (b) a washing machine (c) a smart watch (d) a TV remote

Answer key

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

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