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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 526 · 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.🤖 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
  2. 2.True or false: a laptop has a built-in keyboard. (a) False (b) True
  3. 3.True or false: a laptop needs much more power. (a) False (b) True
  4. 4.Which of these usually has a microcontroller inside? (a) a candle (b) a bicycle bell (c) a smart watch (d) a wind-up toy
  5. 5.Which of these has no microcontroller inside? (a) a wind-up toy (b) a washing machine (c) a digital thermometer (d) a digital alarm clock
  6. 6.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  7. 7.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  8. 8.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the power LED (c) the reset button (d) the USB port
  9. 9.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the voltage regulator (c) the USB port (d) the main chip
  10. 10.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  11. 11.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  12. 12.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the power LED (c) the reset button (d) the USB port
  13. 13.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  14. 14.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a candle (c) a smart watch (d) a digital thermometer
  15. 15.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the main chip (c) the USB port (d) the reset button
  16. 16.True or false: a microcontroller runs many apps at once. (a) True (b) False
  17. 17.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) drawn with a pen (d) sent by sound
  18. 18.Which job is done by the pins? (a) runs the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) restarts the program
  19. 19.Which of these usually has a microcontroller inside? (a) a spinning top (b) a hand pump (c) a plain wall switch (d) a toy robot
  20. 20.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  21. 21.True or false: a laptop uses very little power. (a) True (b) False
  22. 22.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a hand pump (c) a bicycle bell (d) a spinning top
  23. 23.True or false: a microcontroller uses very little power. (a) True (b) False
  24. 24.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  25. 25.Which job is done by the voltage regulator? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) connect sensors and LEDs
  26. 26.True or false: a microcontroller runs one small program. (a) True (b) False
  27. 27.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  28. 28.Which of these has no microcontroller inside? (a) a toy robot (b) a digital alarm clock (c) a microwave oven (d) a bicycle bell
  29. 29.Which job is done by the power LED? (a) brings power and code (b) shows the board is on (c) connect sensors and LEDs (d) restarts the program
  30. 30.🧭 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
  31. 31.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  32. 32.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the USB cable (c) the power LED (d) flash memory
  33. 33.Which job is done by the reset button? (a) keeps the voltage steady (b) restarts the program (c) runs the program (d) shows the board is on
  34. 34.Which of these has no microcontroller inside? (a) a microwave oven (b) a plain wall switch (c) a digital thermometer (d) a digital alarm clock
  35. 35.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  36. 36.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  37. 37.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  38. 38.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the pins (c) the power LED (d) the voltage regulator
  39. 39.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) USB or a 9 V battery (c) a wall socket directly (d) bare mains wires
  40. 40.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False

Answer key

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

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