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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 79 · 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.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  2. 2.🤖 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
  3. 3.True or false: a microcontroller needs much more power. (a) False (b) True
  4. 4.Which of these has no microcontroller inside? (a) a washing machine (b) a digital alarm clock (c) a spinning top (d) a smart watch
  5. 5.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a TV remote (d) a wind-up toy
  6. 6.Which job is done by the main chip? (a) brings power and code (b) runs the program (c) restarts the program (d) connect sensors and LEDs
  7. 7.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  8. 8.Which job is done by the power LED? (a) keeps the voltage steady (b) runs the program (c) shows the board is on (d) connect sensors and LEDs
  9. 9.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  10. 10.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  11. 11.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the voltage regulator (c) the USB port (d) the power LED
  12. 12.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  13. 13.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  14. 14.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a digital alarm clock (d) a hand pump
  15. 15.True or false: a laptop needs much more power. (a) False (b) True
  16. 16.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  17. 17.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the reset button (c) the pins (d) the voltage regulator
  18. 18.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a wind-up toy (c) a hand pump (d) a microwave oven
  19. 19.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  20. 20.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) the power LED (d) flash memory
  21. 21.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  22. 22.🤖 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
  23. 23.🤖 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
  24. 24.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  25. 25.Which of these has no microcontroller inside? (a) a digital thermometer (b) a digital alarm clock (c) a smart watch (d) a wind-up toy
  26. 26.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  27. 27.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  28. 28.True or false: a laptop has a built-in keyboard. (a) True (b) False
  29. 29.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a hand pump (d) a toy robot
  30. 30.True or false: a laptop has no screen of its own. (a) True (b) False
  31. 31.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a digital thermometer (d) a plain wall switch
  32. 32.Which of these has no microcontroller inside? (a) a toy robot (b) a microwave oven (c) a digital thermometer (d) a bicycle bell
  33. 33.True or false: a microcontroller uses very little power. (a) False (b) True
  34. 34.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  35. 35.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  36. 36.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  37. 37.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) runs the program (c) keeps the voltage steady (d) restarts the program
  38. 38.Which job is done by the reset button? (a) connect sensors and LEDs (b) restarts the program (c) runs the program (d) shows the board is on
  39. 39.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a candle (d) a digital alarm clock
  40. 40.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True

Answer key

  1. Yes
  2. it starts again
  3. False
  4. a spinning top
  5. a TV remote
  6. runs the program
  7. True
  8. shows the board is on
  9. microcontroller
  10. laptop
  11. the USB port
  12. No
  13. False
  14. a hand pump
  15. True
  16. No
  17. the pins
  18. a microwave oven
  19. microcontroller
  20. flash memory
  21. microcontroller
  22. USB or a 9 V battery
  23. a computer on one chip
  24. False
  25. a wind-up toy
  26. Yes
  27. True
  28. True
  29. a toy robot
  30. False
  31. a plain wall switch
  32. a bicycle bell
  33. True
  34. False
  35. Yes
  36. False
  37. keeps the voltage steady
  38. restarts the program
  39. a digital alarm clock
  40. False

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