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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 563 · 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 is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) a wall socket directly (d) USB or a 9 V battery
  2. 2.Which job is done by the power LED? (a) brings power and code (b) keeps the voltage steady (c) shows the board is on (d) connect sensors and LEDs
  3. 3.Which job is done by the USB port? (a) restarts the program (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  4. 4.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  5. 5.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the main chip (c) the pins (d) the USB port
  6. 6.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it starts again (d) it stops forever
  7. 7.Which job is done by the main chip? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) keeps the voltage steady
  8. 8.True or false: a microcontroller runs one small program. (a) True (b) False
  9. 9.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the main chip (c) the pins (d) the power LED
  11. 11.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the power LED (c) the reset button (d) the USB port
  12. 12.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  13. 13.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  14. 14.🤖 What is a microcontroller? (a) a computer on one chip (b) a type of battery (c) a kind of bulb (d) a big desktop computer
  15. 15.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  16. 16.True or false: a microcontroller runs many apps at once. (a) True (b) False
  17. 17.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  18. 18.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a wind-up toy (c) a candle (d) a bicycle bell
  19. 19.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the main chip (c) the USB port (d) the voltage regulator
  20. 20.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  21. 21.True or false: a laptop has a built-in keyboard. (a) True (b) False
  22. 22.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  23. 23.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) flash memory (d) the power LED
  24. 24.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the pins (c) the reset button (d) the voltage regulator
  25. 25.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital thermometer (c) a wind-up toy (d) a smart watch
  26. 26.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  27. 27.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  28. 28.🧭 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 reset button
  29. 29.Which of these has no microcontroller inside? (a) a toy robot (b) a washing machine (c) a microwave oven (d) a spinning top
  30. 30.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  31. 31.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  32. 32.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  33. 33.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  34. 34.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  35. 35.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  36. 36.True or false: a laptop has no screen of its own. (a) False (b) True
  37. 37.True or false: a microcontroller has no screen of its own. (a) False (b) True
  38. 38.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  39. 39.Which job is done by the pins? (a) keeps the voltage steady (b) brings power and code (c) connect sensors and LEDs (d) shows the board is on
  40. 40.Which job is done by the reset button? (a) brings power and code (b) shows the board is on (c) restarts the program (d) connect sensors and LEDs

Answer key

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

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