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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 253 · 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.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  2. 2.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  3. 3.Which job is done by the reset button? (a) connect sensors and LEDs (b) runs the program (c) restarts the program (d) brings power and code
  4. 4.Which job is done by the main chip? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) runs the program
  5. 5.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the voltage regulator (c) the main chip (d) the pins
  6. 6.Which job is done by the voltage regulator? (a) runs the program (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
  7. 7.True or false: a laptop has no screen of its own. (a) False (b) True
  8. 8.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  9. 9.Which of these has no microcontroller inside? (a) a washing machine (b) a TV remote (c) a plain wall switch (d) a smart watch
  10. 10.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) typed on the chip (c) uploaded over USB (d) drawn with a pen
  11. 11.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  12. 12.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the power LED (c) the pins (d) the voltage regulator
  13. 13.Which of these has no microcontroller inside? (a) a TV remote (b) a digital thermometer (c) a digital alarm clock (d) a hand pump
  14. 14.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a digital thermometer (d) a candle
  15. 15.Which of these usually has a microcontroller inside? (a) a spinning top (b) a washing machine (c) a hand pump (d) a wind-up toy
  16. 16.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the power LED (c) the voltage regulator (d) the USB port
  17. 17.Which of these usually has a microcontroller inside? (a) a spinning top (b) a toy robot (c) a candle (d) a hand pump
  18. 18.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  19. 19.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a hand pump (c) a digital thermometer (d) a plain wall switch
  20. 20.Which job is done by the pins? (a) connect sensors and LEDs (b) runs the program (c) restarts the program (d) keeps the voltage steady
  21. 21.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  22. 22.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  23. 23.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a spinning top (c) a candle (d) a smart watch
  24. 24.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  25. 25.🤖 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
  26. 26.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  27. 27.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  28. 28.Which job is done by the USB port? (a) runs the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) brings power and code
  29. 29.Which of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a plain wall switch (d) a microwave oven
  30. 30.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  31. 31.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  32. 32.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  33. 33.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
  34. 34.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  35. 35.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) the board breaks (d) it stops forever
  36. 36.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  37. 37.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the USB port (c) the reset button (d) the power LED
  38. 38.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  39. 39.🤖 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
  40. 40.True or false: a laptop uses very little power. (a) False (b) True

Answer key

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

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