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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 644 · 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 of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a TV remote (d) a bicycle bell
  2. 2.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a spinning top (d) a toy robot
  3. 3.🤖 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
  4. 4.Which job is done by the pins? (a) connect sensors and LEDs (b) keeps the voltage steady (c) restarts the program (d) brings power and code
  5. 5.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  6. 6.Which job is done by the power LED? (a) shows the board is on (b) runs the program (c) connect sensors and LEDs (d) brings power and code
  7. 7.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the pins (c) the power LED (d) the voltage regulator
  8. 8.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  9. 9.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  10. 10.True or false: a laptop uses very little power. (a) False (b) True
  11. 11.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the voltage regulator (c) the reset button (d) the power LED
  12. 12.Which of these has no microcontroller inside? (a) a plain wall switch (b) a smart watch (c) a digital alarm clock (d) a digital thermometer
  13. 13.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  14. 14.Which of these has no microcontroller inside? (a) a toy robot (b) a smart watch (c) a digital alarm clock (d) a wind-up toy
  15. 15.True or false: a microcontroller uses very little power. (a) True (b) False
  16. 16.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  17. 17.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  18. 18.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  19. 19.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  20. 20.Which job is done by the USB port? (a) shows the board is on (b) keeps the voltage steady (c) connect sensors and LEDs (d) brings power and code
  21. 21.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the USB port (c) the reset button (d) the pins
  22. 22.Which of these has no microcontroller inside? (a) a washing machine (b) a smart watch (c) a digital thermometer (d) a hand pump
  23. 23.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  24. 24.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital thermometer (c) a candle (d) a wind-up toy
  25. 25.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  26. 26.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) the board breaks (c) it stops forever (d) it deletes itself
  27. 27.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  28. 28.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  29. 29.🤖 What is a microcontroller? (a) a computer on one chip (b) a big desktop computer (c) a type of battery (d) a kind of bulb
  30. 30.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the pins (c) the USB port (d) the power LED
  31. 31.🧭 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
  32. 32.True or false: a laptop needs much more power. (a) True (b) False
  33. 33.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  34. 34.Which of these usually has a microcontroller inside? (a) a candle (b) a washing machine (c) a wind-up toy (d) a hand pump
  35. 35.🤖 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
  36. 36.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  37. 37.True or false: a microcontroller has no screen of its own. (a) False (b) True
  38. 38.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the voltage regulator (c) the USB port (d) the main chip
  39. 39.True or false: a microcontroller runs one small program. (a) True (b) False
  40. 40.Which job is done by the reset button? (a) restarts the program (b) runs the program (c) shows the board is on (d) keeps the voltage steady

Answer key

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

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