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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 78 · 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.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  2. 2.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the main chip (c) the voltage regulator (d) the USB port
  3. 3.True or false: a laptop needs much more power. (a) True (b) False
  4. 4.Which job is done by the USB port? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) brings power and code
  5. 5.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  6. 6.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  7. 7.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the main chip (c) the reset button (d) the pins
  8. 8.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  9. 9.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  10. 10.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  11. 11.True or false: a laptop runs one small program. (a) True (b) False
  12. 12.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  13. 13.Which job is done by the main chip? (a) runs the program (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
  14. 14.Which job is done by the power LED? (a) connect sensors and LEDs (b) restarts the program (c) keeps the voltage steady (d) shows the board is on
  15. 15.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  16. 16.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) it stops forever (d) the board breaks
  17. 17.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a digital thermometer (d) a wind-up toy
  18. 18.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a 230 V cable (d) a wall socket directly
  19. 19.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a hand pump (d) a microwave oven
  20. 20.Which job is done by the pins? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) connect sensors and LEDs
  21. 21.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  22. 22.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) drawn with a pen (d) uploaded over USB
  23. 23.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  24. 24.Which of these has no microcontroller inside? (a) a toy robot (b) a TV remote (c) a microwave oven (d) a wind-up toy
  25. 25.True or false: a candle has no microcontroller inside. (a) True (b) False
  26. 26.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the voltage regulator (c) the reset button (d) the power LED
  27. 27.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  28. 28.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  29. 29.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  30. 30.Which of these usually has a microcontroller inside? (a) a smart watch (b) a plain wall switch (c) a hand pump (d) a candle
  31. 31.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  32. 32.🤖 What is a microcontroller? (a) a kind of bulb (b) a type of battery (c) a computer on one chip (d) a big desktop computer
  33. 33.True or false: a microcontroller runs one small program. (a) False (b) True
  34. 34.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the USB cable (c) the power LED (d) the resistor
  35. 35.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the main chip (c) the pins (d) the reset button
  36. 36.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  37. 37.Which job is done by the voltage regulator? (a) shows the board is on (b) restarts the program (c) keeps the voltage steady (d) runs the program
  38. 38.True or false: a laptop uses very little power. (a) False (b) True
  39. 39.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the USB port (c) the power LED (d) the pins
  40. 40.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a washing machine (d) a plain wall switch

Answer key

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

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