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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 144 · 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 part of a microcontroller board brings power and code? (a) the power LED (b) the pins (c) the USB port (d) the reset button
  2. 2.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  3. 3.Which job is done by the main chip? (a) keeps the voltage steady (b) connect sensors and LEDs (c) shows the board is on (d) runs the program
  4. 4.True or false: a laptop uses very little power. (a) False (b) True
  5. 5.Which job is done by the reset button? (a) restarts the program (b) brings power and code (c) keeps the voltage steady (d) connect sensors and LEDs
  6. 6.Which job is done by the power LED? (a) runs the program (b) keeps the voltage steady (c) brings power and code (d) shows the board is on
  7. 7.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  8. 8.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the pins (c) the power LED (d) the USB port
  9. 9.Which of these has no microcontroller inside? (a) a spinning top (b) a washing machine (c) a digital thermometer (d) a microwave oven
  10. 10.Which of these has no microcontroller inside? (a) a TV remote (b) a smart watch (c) a bicycle bell (d) a digital thermometer
  11. 11.True or false: a microcontroller runs one small program. (a) True (b) False
  12. 12.Which of these has no microcontroller inside? (a) a toy robot (b) a hand pump (c) a digital thermometer (d) a microwave oven
  13. 13.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  14. 14.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  15. 15.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) the USB cable (d) flash memory
  16. 16.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a big desktop computer (d) a computer on one chip
  17. 17.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  18. 18.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
  19. 19.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  20. 20.True or false: a laptop has a built-in keyboard. (a) False (b) True
  21. 21.True or false: a microcontroller runs many apps at once. (a) False (b) True
  22. 22.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) the board breaks (d) it deletes itself
  23. 23.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) sent by sound (d) uploaded over USB
  24. 24.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  25. 25.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  26. 26.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the reset button (c) the pins (d) the power LED
  27. 27.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  28. 28.True or false: a microcontroller needs much more power. (a) False (b) True
  29. 29.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  30. 30.True or false: a laptop has no screen of its own. (a) False (b) True
  31. 31.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  32. 32.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the main chip (c) the voltage regulator (d) the USB port
  33. 33.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  34. 34.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the reset button (c) the voltage regulator (d) the pins
  35. 35.Which of these usually has a microcontroller inside? (a) a candle (b) a smart watch (c) a spinning top (d) a plain wall switch
  36. 36.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  37. 37.True or false: a laptop runs one small program. (a) True (b) False
  38. 38.True or false: a laptop runs many apps at once. (a) False (b) True
  39. 39.Which job is done by the voltage regulator? (a) brings power and code (b) keeps the voltage steady (c) shows the board is on (d) runs the program
  40. 40.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No

Answer key

  1. the USB port
  2. True
  3. runs the program
  4. False
  5. restarts the program
  6. shows the board is on
  7. No
  8. the pins
  9. a spinning top
  10. a bicycle bell
  11. True
  12. a hand pump
  13. False
  14. laptop
  15. flash memory
  16. a computer on one chip
  17. No
  18. False
  19. microcontroller
  20. True
  21. False
  22. it starts again
  23. uploaded over USB
  24. microcontroller
  25. False
  26. the power LED
  27. microcontroller
  28. False
  29. False
  30. False
  31. False
  32. the main chip
  33. False
  34. the voltage regulator
  35. a smart watch
  36. Yes
  37. False
  38. True
  39. keeps the voltage steady
  40. Yes

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