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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 747 · 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) No (b) Yes
  2. 2.🤖 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
  3. 3.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the USB port (c) the power LED (d) the main chip
  4. 4.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  5. 5.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  6. 6.Which of these has no microcontroller inside? (a) a plain wall switch (b) a digital alarm clock (c) a digital thermometer (d) a TV remote
  7. 7.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the power LED (c) the USB port (d) the voltage regulator
  8. 8.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a computer on one chip (d) a type of battery
  9. 9.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  11. 11.Which job is done by the power LED? (a) keeps the voltage steady (b) restarts the program (c) shows the board is on (d) runs the program
  12. 12.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  13. 13.True or false: a laptop uses very little power. (a) True (b) False
  14. 14.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  15. 15.Which job is done by the USB port? (a) restarts the program (b) brings power and code (c) runs the program (d) shows the board is on
  16. 16.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  17. 17.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  18. 18.Which job is done by the pins? (a) runs the program (b) keeps the voltage steady (c) shows the board is on (d) connect sensors and LEDs
  19. 19.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  20. 20.Which of these usually has a microcontroller inside? (a) a smart watch (b) a candle (c) a spinning top (d) a plain wall switch
  21. 21.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  22. 22.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) flash memory (d) the USB cable
  23. 23.True or false: a laptop runs one small program. (a) False (b) True
  24. 24.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the power LED (c) the main chip (d) the pins
  25. 25.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  26. 26.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  27. 27.True or false: a microcontroller uses very little power. (a) False (b) True
  28. 28.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital alarm clock (c) a candle (d) a washing machine
  29. 29.Which job is done by the main chip? (a) keeps the voltage steady (b) shows the board is on (c) brings power and code (d) runs the program
  30. 30.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the reset button (c) the voltage regulator (d) the power LED
  31. 31.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a plain wall switch (c) a TV remote (d) a bicycle bell
  32. 32.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a spinning top (c) a candle (d) a bicycle bell
  33. 33.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a washing machine (c) a wind-up toy (d) a candle
  34. 34.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  35. 35.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  36. 36.🤖 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
  37. 37.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  38. 38.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  39. 39.Which of these has no microcontroller inside? (a) a toy robot (b) a spinning top (c) a digital alarm clock (d) a digital thermometer
  40. 40.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False

Answer key

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

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