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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 640 · 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 job is done by the main chip? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) runs the program
  2. 2.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a spinning top (d) a microwave oven
  3. 3.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the main chip (c) the power LED (d) the voltage regulator
  4. 4.Which of these has no microcontroller inside? (a) a digital thermometer (b) a washing machine (c) a smart watch (d) a hand pump
  5. 5.Which job is done by the pins? (a) shows the board is on (b) brings power and code (c) connect sensors and LEDs (d) runs the program
  6. 6.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a type of battery (d) a computer on one chip
  7. 7.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  8. 8.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  9. 9.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the power LED (c) the USB port (d) the main chip
  10. 10.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the power LED (c) the voltage regulator (d) the main chip
  11. 11.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a candle (c) a digital thermometer (d) a bicycle bell
  12. 12.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  13. 13.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) sent by sound (d) drawn with a pen
  14. 14.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  15. 15.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  16. 16.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a spinning top (c) a TV remote (d) a candle
  17. 17.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the resistor (d) the power LED
  18. 18.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  19. 19.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  20. 20.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a candle (c) a bicycle bell (d) a washing machine
  21. 21.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a wall socket directly (d) a 230 V cable
  22. 22.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  23. 23.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the voltage regulator (c) the power LED (d) the pins
  24. 24.True or false: a microcontroller uses very little power. (a) False (b) True
  25. 25.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a digital alarm clock (c) a plain wall switch (d) a candle
  26. 26.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  27. 27.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the pins (c) the reset button (d) the voltage regulator
  28. 28.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  29. 29.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  30. 30.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  31. 31.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  32. 32.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  33. 33.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  34. 34.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  35. 35.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a toy robot (d) a plain wall switch
  36. 36.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  37. 37.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  38. 38.True or false: a laptop has no screen of its own. (a) True (b) False
  39. 39.True or false: a laptop runs one small program. (a) True (b) False
  40. 40.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it starts again (d) it stops forever

Answer key

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

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