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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 149 · 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 wind-up toy (b) a digital thermometer (c) a candle (d) a bicycle bell
  2. 2.Which of these has no microcontroller inside? (a) a toy robot (b) a digital thermometer (c) a bicycle bell (d) a washing machine
  3. 3.True or false: a laptop runs one small program. (a) True (b) False
  4. 4.True or false: a laptop has no screen of its own. (a) True (b) False
  5. 5.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a wall socket directly (d) a 230 V cable
  6. 6.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  7. 7.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  8. 8.🤖 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
  9. 9.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) the resistor (d) flash memory
  10. 10.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a kind of bulb (d) a big desktop computer
  11. 11.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the main chip (c) the pins (d) the USB port
  12. 12.True or false: a microcontroller runs one small program. (a) True (b) False
  13. 13.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  14. 14.Which of these has no microcontroller inside? (a) a TV remote (b) a candle (c) a microwave oven (d) a smart watch
  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 stops forever (b) it starts again (c) the board breaks (d) it deletes itself
  17. 17.Which of these has no microcontroller inside? (a) a microwave oven (b) a hand pump (c) a digital thermometer (d) a TV remote
  18. 18.True or false: a laptop runs many apps at once. (a) False (b) True
  19. 19.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  20. 20.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  21. 21.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  22. 22.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  23. 23.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  24. 24.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  25. 25.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  26. 26.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  27. 27.Which of these usually has a microcontroller inside? (a) a candle (b) a washing machine (c) a hand pump (d) a plain wall switch
  28. 28.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  29. 29.Which job is done by the reset button? (a) shows the board is on (b) runs the program (c) brings power and code (d) restarts the program
  30. 30.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the USB port (c) the power LED (d) the reset button
  31. 31.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  32. 32.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  33. 33.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  34. 34.True or false: a laptop uses very little power. (a) True (b) False
  35. 35.True or false: a microcontroller runs many apps at once. (a) False (b) True
  36. 36.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the voltage regulator (c) the power LED (d) the main chip
  37. 37.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a hand pump (c) a plain wall switch (d) a bicycle bell
  38. 38.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the USB port (c) the reset button (d) the voltage regulator
  39. 39.Which of these usually has a microcontroller inside? (a) a candle (b) a digital alarm clock (c) a wind-up toy (d) a hand pump
  40. 40.True or false: a laptop has a built-in keyboard. (a) False (b) True

Answer key

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

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