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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 622 · 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 has no microcontroller inside? (a) a spinning top (b) a microwave oven (c) a digital alarm clock (d) a digital thermometer
  2. 2.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  3. 3.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) the resistor (d) flash memory
  4. 4.True or false: a microcontroller has no screen of its own. (a) False (b) True
  5. 5.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a wind-up toy (c) a spinning top (d) a hand pump
  6. 6.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the USB port (c) the reset button (d) the pins
  7. 7.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the voltage regulator (c) the main chip (d) the USB port
  8. 8.Which job is done by the power LED? (a) restarts the program (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
  9. 9.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  10. 10.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a wall socket directly (c) bare mains wires (d) a 230 V cable
  11. 11.Which of these has no microcontroller inside? (a) a digital thermometer (b) a candle (c) a TV remote (d) a toy robot
  12. 12.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  13. 13.Which job is done by the main chip? (a) connect sensors and LEDs (b) brings power and code (c) runs the program (d) restarts the program
  14. 14.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it deletes itself (d) it starts again
  15. 15.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  16. 16.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  17. 17.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the voltage regulator (c) the USB port (d) the power LED
  18. 18.🤖 What is a microcontroller? (a) a kind of bulb (b) a computer on one chip (c) a big desktop computer (d) a type of battery
  19. 19.Which job is done by the voltage regulator? (a) brings power and code (b) runs the program (c) connect sensors and LEDs (d) keeps the voltage steady
  20. 20.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  21. 21.True or false: a microcontroller uses very little power. (a) False (b) True
  22. 22.True or false: a microcontroller runs many apps at once. (a) True (b) False
  23. 23.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the USB port (c) the voltage regulator (d) the power LED
  24. 24.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a plain wall switch (d) a washing machine
  25. 25.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  26. 26.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  27. 27.Which job is done by the USB port? (a) shows the board is on (b) runs the program (c) brings power and code (d) restarts the program
  28. 28.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a washing machine (c) a smart watch (d) a plain wall switch
  29. 29.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a washing machine (c) a microwave oven (d) a bicycle bell
  30. 30.True or false: a laptop runs one small program. (a) True (b) False
  31. 31.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  32. 32.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital alarm clock (c) a wind-up toy (d) a digital thermometer
  33. 33.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  34. 34.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  35. 35.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  36. 36.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  37. 37.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  38. 38.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  39. 39.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  40. 40.True or false: a microcontroller needs much more power. (a) True (b) False

Answer key

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

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