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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 194 · 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 wind-up toy (c) a TV remote (d) a spinning top
  2. 2.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a spinning top (d) a toy robot
  3. 3.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  4. 4.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the main chip (c) the power LED (d) the voltage regulator
  5. 5.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a microwave oven (c) a washing machine (d) a bicycle bell
  6. 6.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  7. 7.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a bicycle bell (d) a smart watch
  8. 8.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a hand pump (c) a wind-up toy (d) a candle
  9. 9.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it deletes itself (d) it starts again
  10. 10.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the main chip (c) the pins (d) the USB port
  11. 11.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  12. 12.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a hand pump (c) a candle (d) a bicycle bell
  13. 13.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  14. 14.🤖 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
  15. 15.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  16. 16.Which job is done by the power LED? (a) connect sensors and LEDs (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
  17. 17.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  18. 18.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  19. 19.True or false: a laptop runs one small program. (a) True (b) False
  20. 20.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  21. 21.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  22. 22.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  23. 23.True or false: a microcontroller uses very little power. (a) False (b) True
  24. 24.Which of these has no microcontroller inside? (a) a spinning top (b) a washing machine (c) a digital thermometer (d) a TV remote
  25. 25.Which of these has no microcontroller inside? (a) a toy robot (b) a microwave oven (c) a smart watch (d) a plain wall switch
  26. 26.True or false: a microcontroller has no screen of its own. (a) False (b) True
  27. 27.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  28. 28.🤖 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
  29. 29.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  30. 30.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
  31. 31.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  32. 32.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the USB port (c) the main chip (d) the pins
  33. 33.True or false: a microcontroller runs one small program. (a) True (b) False
  34. 34.Which job is done by the main chip? (a) restarts the program (b) runs the program (c) connect sensors and LEDs (d) keeps the voltage steady
  35. 35.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  36. 36.Which job is done by the USB port? (a) runs the program (b) brings power and code (c) shows the board is on (d) restarts the program
  37. 37.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a wind-up toy (c) a washing machine (d) a bicycle bell
  38. 38.True or false: a laptop has no screen of its own. (a) True (b) False
  39. 39.True or false: a laptop has a built-in keyboard. (a) True (b) False
  40. 40.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the power LED (c) the pins (d) the voltage regulator

Answer key

  1. a TV remote
  2. a toy robot
  3. laptop
  4. the voltage regulator
  5. a bicycle bell
  6. True
  7. a smart watch
  8. a digital thermometer
  9. it starts again
  10. the pins
  11. True
  12. a microwave oven
  13. True
  14. USB or a 9 V battery
  15. No
  16. shows the board is on
  17. microcontroller
  18. microcontroller
  19. False
  20. True
  21. No
  22. laptop
  23. True
  24. a spinning top
  25. a plain wall switch
  26. True
  27. False
  28. flash memory
  29. microcontroller
  30. uploaded over USB
  31. laptop
  32. the USB port
  33. True
  34. runs the program
  35. False
  36. brings power and code
  37. a washing machine
  38. False
  39. True
  40. the power LED

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