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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 338 · 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 connect sensors and LEDs? (a) the power LED (b) the main chip (c) the pins (d) the reset button
  2. 2.True or false: a microcontroller has no screen of its own. (a) False (b) True
  3. 3.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  4. 4.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  5. 5.True or false: a microcontroller runs many apps at once. (a) True (b) False
  6. 6.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  7. 7.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the voltage regulator (c) the power LED (d) the reset button
  8. 8.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  9. 9.True or false: a candle has no microcontroller inside. (a) True (b) False
  10. 10.Which job is done by the USB port? (a) keeps the voltage steady (b) brings power and code (c) restarts the program (d) shows the board is on
  11. 11.🤖 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
  12. 12.Which job is done by the pins? (a) keeps the voltage steady (b) restarts the program (c) shows the board is on (d) connect sensors and LEDs
  13. 13.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  14. 14.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  15. 15.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  16. 16.🤖 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
  17. 17.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a wall socket directly (d) a 230 V cable
  18. 18.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  19. 19.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the reset button (c) the power LED (d) the voltage regulator
  20. 20.True or false: a microcontroller needs much more power. (a) True (b) False
  21. 21.Which job is done by the main chip? (a) keeps the voltage steady (b) shows the board is on (c) connect sensors and LEDs (d) runs the program
  22. 22.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  23. 23.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  24. 24.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
  25. 25.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the power LED (c) the USB port (d) the main chip
  26. 26.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  27. 27.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  28. 28.True or false: a laptop needs much more power. (a) False (b) True
  29. 29.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  30. 30.Which job is done by the power LED? (a) shows the board is on (b) runs the program (c) connect sensors and LEDs (d) brings power and code
  31. 31.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  32. 32.Which of these usually has a microcontroller inside? (a) a spinning top (b) a smart watch (c) a wind-up toy (d) a candle
  33. 33.True or false: a laptop has no screen of its own. (a) False (b) True
  34. 34.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the USB cable (c) the power LED (d) the resistor
  35. 35.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  36. 36.True or false: a laptop runs one small program. (a) True (b) False
  37. 37.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  38. 38.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  39. 39.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  40. 40.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) runs the program (c) keeps the voltage steady (d) shows the board is on

Answer key

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

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