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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 394 · 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 microwave oven (b) a digital alarm clock (c) a wind-up toy (d) a digital thermometer
  2. 2.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  3. 3.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a candle (d) a smart watch
  4. 4.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  5. 5.Which of these has no microcontroller inside? (a) a digital thermometer (b) a plain wall switch (c) a TV remote (d) a washing machine
  6. 6.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  7. 7.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  8. 8.True or false: a microcontroller needs much more power. (a) False (b) True
  9. 9.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital thermometer (c) a spinning top (d) a bicycle bell
  10. 10.Which job is done by the main chip? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) restarts the program
  11. 11.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  12. 12.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the pins (c) the reset button (d) the voltage regulator
  13. 13.Which of these usually has a microcontroller inside? (a) a candle (b) a microwave oven (c) a wind-up toy (d) a hand pump
  14. 14.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the main chip (c) the USB port (d) the reset button
  15. 15.🤖 What is a microcontroller? (a) a kind of bulb (b) a type of battery (c) a computer on one chip (d) a big desktop computer
  16. 16.Which job is done by the power LED? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) shows the board is on
  17. 17.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the main chip (c) the voltage regulator (d) the power LED
  18. 18.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the voltage regulator (c) the power LED (d) the USB port
  19. 19.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  20. 20.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  21. 21.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a candle (c) a plain wall switch (d) a wind-up toy
  22. 22.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it starts again (d) it stops forever
  23. 23.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  24. 24.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  25. 25.Which of these usually has a microcontroller inside? (a) a hand pump (b) a bicycle bell (c) a wind-up toy (d) a toy robot
  26. 26.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  27. 27.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  28. 28.Which job is done by the USB port? (a) runs the program (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  29. 29.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  30. 30.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  31. 31.True or false: a laptop runs many apps at once. (a) False (b) True
  32. 32.Which of these usually has a microcontroller inside? (a) a candle (b) a washing machine (c) a hand pump (d) a bicycle bell
  33. 33.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  34. 34.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  35. 35.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a candle (d) a smart watch
  36. 36.True or false: a laptop uses very little power. (a) True (b) False
  37. 37.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) a 230 V cable (d) USB or a 9 V battery
  38. 38.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  39. 39.True or false: a laptop runs one small program. (a) False (b) True
  40. 40.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False

Answer key

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

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