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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 454 · 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 USB port? (a) connect sensors and LEDs (b) keeps the voltage steady (c) brings power and code (d) restarts the program
  2. 2.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) flash memory (d) the resistor
  3. 3.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a digital thermometer (d) a wind-up toy
  4. 4.Which job is done by the power LED? (a) connect sensors and LEDs (b) brings power and code (c) shows the board is on (d) restarts the program
  5. 5.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
  6. 6.True or false: a microcontroller needs much more power. (a) False (b) True
  7. 7.True or false: a laptop runs one small program. (a) False (b) True
  8. 8.Which of these has no microcontroller inside? (a) a microwave oven (b) a TV remote (c) a washing machine (d) a plain wall switch
  9. 9.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  10. 10.True or false: a microcontroller runs one small program. (a) True (b) False
  11. 11.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a hand pump (c) a toy robot (d) a candle
  12. 12.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the voltage regulator (c) the USB port (d) the pins
  13. 13.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the USB port (c) the power LED (d) the voltage regulator
  14. 14.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  15. 15.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  16. 16.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  17. 17.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) the board breaks (d) it deletes itself
  18. 18.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  19. 19.Which of these has no microcontroller inside? (a) a hand pump (b) a microwave oven (c) a toy robot (d) a digital thermometer
  20. 20.Which job is done by the pins? (a) runs the program (b) shows the board is on (c) brings power and code (d) connect sensors and LEDs
  21. 21.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the voltage regulator (c) the reset button (d) the power LED
  22. 22.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the pins (c) the USB port (d) the main chip
  23. 23.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the pins (c) the voltage regulator (d) the power LED
  24. 24.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the USB port (c) the main chip (d) the voltage regulator
  25. 25.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  26. 26.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  27. 27.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  28. 28.Which of these has no microcontroller inside? (a) a washing machine (b) a toy robot (c) a digital thermometer (d) a bicycle bell
  29. 29.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  30. 30.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  31. 31.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  32. 32.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  33. 33.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  34. 34.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  35. 35.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  36. 36.True or false: a microcontroller has no screen of its own. (a) False (b) True
  37. 37.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a spinning top (d) a microwave oven
  38. 38.Which job is done by the main chip? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) runs the program
  39. 39.🤖 What is a microcontroller? (a) a big desktop computer (b) a computer on one chip (c) a type of battery (d) a kind of bulb
  40. 40.True or false: a microcontroller uses very little power. (a) True (b) False

Answer key

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

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