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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 145 · 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 part of a microcontroller board brings power and code? (a) the voltage regulator (b) the pins (c) the USB port (d) the power LED
  2. 2.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  3. 3.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) bare mains wires (d) a 230 V cable
  4. 4.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  5. 5.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  6. 6.Which job is done by the USB port? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  7. 7.Which job is done by the main chip? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) shows the board is on
  8. 8.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  9. 9.Which of these has no microcontroller inside? (a) a microwave oven (b) a hand pump (c) a toy robot (d) a TV remote
  10. 10.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the reset button (c) the pins (d) the power LED
  11. 11.🤖 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
  12. 12.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  13. 13.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  14. 14.True or false: a laptop uses very little power. (a) False (b) True
  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.🤖 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
  17. 17.True or false: a laptop needs much more power. (a) True (b) False
  18. 18.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a smart watch (c) a wind-up toy (d) a plain wall switch
  19. 19.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  20. 20.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  21. 21.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) it deletes itself (d) the board breaks
  22. 22.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  23. 23.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  24. 24.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the pins (c) the voltage regulator (d) the USB port
  25. 25.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  26. 26.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a digital thermometer (d) a hand pump
  27. 27.True or false: a microcontroller has no screen of its own. (a) False (b) True
  28. 28.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  29. 29.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  30. 30.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the USB port (c) the main chip (d) the reset button
  31. 31.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  32. 32.True or false: a microcontroller needs much more power. (a) False (b) True
  33. 33.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  34. 34.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a candle (c) a microwave oven (d) a TV remote
  35. 35.True or false: a laptop runs one small program. (a) True (b) False
  36. 36.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  37. 37.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  38. 38.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the main chip (c) the voltage regulator (d) the power LED
  39. 39.Which job is done by the pins? (a) keeps the voltage steady (b) shows the board is on (c) brings power and code (d) connect sensors and LEDs
  40. 40.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a bicycle bell (d) a washing machine

Answer key

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

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