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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 703 · 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) USB or a 9 V battery (b) a wall socket directly (c) bare mains wires (d) a 230 V cable
  2. 2.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) sent by sound (d) drawn with a pen
  3. 3.True or false: a microcontroller has no screen of its own. (a) False (b) True
  4. 4.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) the resistor (d) flash memory
  5. 5.Which job is done by the power LED? (a) restarts the program (b) keeps the voltage steady (c) shows the board is on (d) connect sensors and LEDs
  6. 6.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  7. 7.🤖 What is a microcontroller? (a) a computer on one chip (b) a kind of bulb (c) a type of battery (d) a big desktop computer
  8. 8.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the reset button (c) the main chip (d) the voltage regulator
  9. 9.Which job is done by the pins? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) connect sensors and LEDs
  10. 10.True or false: a microcontroller needs much more power. (a) True (b) False
  11. 11.Which job is done by the reset button? (a) brings power and code (b) runs the program (c) restarts the program (d) shows the board is on
  12. 12.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  13. 13.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  14. 14.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
  15. 15.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a TV remote (d) a spinning top
  16. 16.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the power LED (c) the reset button (d) the USB port
  17. 17.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  18. 18.Which of these usually has a microcontroller inside? (a) a spinning top (b) a washing machine (c) a candle (d) a hand pump
  19. 19.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a bicycle bell (c) a wind-up toy (d) a plain wall switch
  20. 20.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  21. 21.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  22. 22.True or false: a microcontroller runs many apps at once. (a) False (b) True
  23. 23.Which of these usually has a microcontroller inside? (a) a candle (b) a toy robot (c) a hand pump (d) a wind-up toy
  24. 24.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  25. 25.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the pins (c) the reset button (d) the voltage regulator
  26. 26.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the reset button (d) the main chip
  27. 27.Which job is done by the USB port? (a) shows the board is on (b) runs the program (c) brings power and code (d) connect sensors and LEDs
  28. 28.True or false: a laptop runs many apps at once. (a) False (b) True
  29. 29.True or false: a microcontroller runs one small program. (a) True (b) False
  30. 30.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it stops forever (d) it starts again
  31. 31.True or false: a microcontroller uses very little power. (a) True (b) False
  32. 32.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  33. 33.Which job is done by the main chip? (a) connect sensors and LEDs (b) shows the board is on (c) restarts the program (d) runs the program
  34. 34.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  35. 35.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  36. 36.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  37. 37.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  38. 38.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  39. 39.True or false: a laptop runs one small program. (a) False (b) True
  40. 40.True or false: a laptop has no screen of its own. (a) True (b) False

Answer key

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

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