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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 341 · 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 hand pump usually have a microcontroller inside? (a) Yes (b) No
  2. 2.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) it deletes itself (d) the board breaks
  3. 3.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a kind of bulb (d) a computer on one chip
  4. 4.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  5. 5.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the voltage regulator (c) the pins (d) the reset button
  6. 6.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  7. 7.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  8. 8.Which of these has no microcontroller inside? (a) a toy robot (b) a washing machine (c) a smart watch (d) a bicycle bell
  9. 9.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a wall socket directly (c) a 230 V cable (d) bare mains wires
  10. 10.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  11. 11.True or false: a candle has no microcontroller inside. (a) False (b) True
  12. 12.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  13. 13.Which job is done by the USB port? (a) connect sensors and LEDs (b) shows the board is on (c) brings power and code (d) keeps the voltage steady
  14. 14.Which of these has no microcontroller inside? (a) a washing machine (b) a hand pump (c) a TV remote (d) a smart watch
  15. 15.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the resistor (d) the USB cable
  16. 16.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a hand pump (c) a candle (d) a spinning top
  17. 17.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  18. 18.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  19. 19.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the USB port (c) the voltage regulator (d) the power LED
  20. 20.Which job is done by the main chip? (a) connect sensors and LEDs (b) shows the board is on (c) runs the program (d) brings power and code
  21. 21.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  22. 22.Which of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a spinning top (d) a microwave oven
  23. 23.Which job is done by the power LED? (a) runs the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) shows the board is on
  24. 24.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  25. 25.True or false: a microcontroller runs many apps at once. (a) False (b) True
  26. 26.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) restarts the program (c) brings power and code (d) connect sensors and LEDs
  27. 27.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  28. 28.True or false: a microcontroller uses very little power. (a) False (b) True
  29. 29.True or false: a microcontroller needs much more power. (a) False (b) True
  30. 30.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital thermometer (c) a plain wall switch (d) a TV remote
  31. 31.Which job is done by the reset button? (a) shows the board is on (b) runs the program (c) restarts the program (d) connect sensors and LEDs
  32. 32.True or false: a microcontroller has no screen of its own. (a) True (b) False
  33. 33.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  34. 34.True or false: a laptop needs much more power. (a) False (b) True
  35. 35.Which job is done by the pins? (a) brings power and code (b) connect sensors and LEDs (c) runs the program (d) shows the board is on
  36. 36.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  37. 37.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  38. 38.True or false: a laptop uses very little power. (a) True (b) False
  39. 39.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a plain wall switch (c) a spinning top (d) a washing machine
  40. 40.True or false: a washing machine has no microcontroller inside. (a) True (b) False

Answer key

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

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