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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 481 · 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 restarts the program? (a) the reset button (b) the USB port (c) the pins (d) the main chip
  2. 2.True or false: a microcontroller has no screen of its own. (a) False (b) True
  3. 3.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) the resistor (d) flash memory
  4. 4.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  5. 5.Which job is done by the USB port? (a) keeps the voltage steady (b) shows the board is on (c) brings power and code (d) runs the program
  6. 6.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  7. 7.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  8. 8.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) typed on the chip (c) drawn with a pen (d) uploaded over USB
  9. 9.True or false: a microcontroller runs one small program. (a) True (b) False
  10. 10.True or false: a microcontroller uses very little power. (a) False (b) True
  11. 11.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  12. 12.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  13. 13.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the power LED (c) the voltage regulator (d) the main chip
  14. 14.True or false: a spinning top has no microcontroller inside. (a) True (b) False
  15. 15.Which job is done by the power LED? (a) connect sensors and LEDs (b) restarts the program (c) runs the program (d) shows the board is on
  16. 16.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) restarts the program (c) runs the program (d) keeps the voltage steady
  17. 17.Which of these has no microcontroller inside? (a) a microwave oven (b) a bicycle bell (c) a smart watch (d) a TV remote
  18. 18.True or false: a laptop runs one small program. (a) True (b) False
  19. 19.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  20. 20.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  21. 21.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  22. 22.True or false: a candle has no microcontroller inside. (a) True (b) False
  23. 23.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  24. 24.Which of these has no microcontroller inside? (a) a smart watch (b) a washing machine (c) a digital alarm clock (d) a candle
  25. 25.Which of these has no microcontroller inside? (a) a TV remote (b) a plain wall switch (c) a washing machine (d) a microwave oven
  26. 26.Which job is done by the reset button? (a) restarts the program (b) shows the board is on (c) runs the program (d) brings power and code
  27. 27.Which job is done by the main chip? (a) restarts the program (b) keeps the voltage steady (c) shows the board is on (d) runs the program
  28. 28.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  29. 29.Which of these has no microcontroller inside? (a) a toy robot (b) a digital alarm clock (c) a smart watch (d) a spinning top
  30. 30.True or false: a microcontroller runs many apps at once. (a) False (b) True
  31. 31.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  32. 32.Which of these has no microcontroller inside? (a) a TV remote (b) a toy robot (c) a smart watch (d) a wind-up toy
  33. 33.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  34. 34.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  35. 35.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) a wall socket directly (d) bare mains wires
  36. 36.True or false: a laptop runs many apps at once. (a) True (b) False
  37. 37.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a computer on one chip (d) a big desktop computer
  38. 38.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  39. 39.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  40. 40.Which job is done by the pins? (a) keeps the voltage steady (b) connect sensors and LEDs (c) runs the program (d) brings power and code

Answer key

  1. the reset button
  2. True
  3. flash memory
  4. No
  5. brings power and code
  6. laptop
  7. True
  8. uploaded over USB
  9. True
  10. True
  11. False
  12. laptop
  13. the power LED
  14. True
  15. shows the board is on
  16. keeps the voltage steady
  17. a bicycle bell
  18. False
  19. Yes
  20. True
  21. False
  22. True
  23. microcontroller
  24. a candle
  25. a plain wall switch
  26. restarts the program
  27. runs the program
  28. False
  29. a spinning top
  30. False
  31. Yes
  32. a wind-up toy
  33. No
  34. No
  35. USB or a 9 V battery
  36. True
  37. a computer on one chip
  38. False
  39. True
  40. connect sensors and LEDs

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