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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 125 · 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 job is done by the main chip? (a) brings power and code (b) keeps the voltage steady (c) runs the program (d) shows the board is on
  2. 2.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a bicycle bell (d) a toy robot
  3. 3.True or false: a microcontroller uses very little power. (a) False (b) True
  4. 4.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  5. 5.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  6. 6.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  7. 7.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the reset button (c) the USB port (d) the main chip
  8. 8.Which of these has no microcontroller inside? (a) a toy robot (b) a digital thermometer (c) a bicycle bell (d) a TV remote
  9. 9.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  10. 10.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  11. 11.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the main chip (c) the reset button (d) the pins
  12. 12.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  13. 13.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  14. 14.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  15. 15.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a spinning top (c) a candle (d) a hand pump
  16. 16.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) the board breaks (d) it stops forever
  17. 17.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a wind-up toy (c) a bicycle bell (d) a candle
  18. 18.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  19. 19.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the power LED (c) the USB port (d) the main chip
  20. 20.Which of these has no microcontroller inside? (a) a digital thermometer (b) a toy robot (c) a spinning top (d) a TV remote
  21. 21.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) connect sensors and LEDs (d) shows the board is on
  22. 22.True or false: a microcontroller needs much more power. (a) False (b) True
  23. 23.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  24. 24.Which of these has no microcontroller inside? (a) a digital thermometer (b) a smart watch (c) a toy robot (d) a candle
  25. 25.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a wind-up toy (d) a digital alarm clock
  26. 26.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) uploaded over USB (d) typed on the chip
  27. 27.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
  28. 28.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  29. 29.Which job is done by the reset button? (a) shows the board is on (b) restarts the program (c) keeps the voltage steady (d) connect sensors and LEDs
  30. 30.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  31. 31.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  32. 32.True or false: a microcontroller has no screen of its own. (a) False (b) True
  33. 33.Which job is done by the power LED? (a) shows the board is on (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
  34. 34.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the pins (c) the reset button (d) the USB port
  35. 35.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  36. 36.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the USB port (c) the reset button (d) the power LED
  37. 37.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  38. 38.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a washing machine (c) a plain wall switch (d) a candle
  39. 39.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the resistor (d) the USB cable
  40. 40.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller

Answer key

  1. runs the program
  2. a toy robot
  3. True
  4. Yes
  5. True
  6. False
  7. the main chip
  8. a bicycle bell
  9. laptop
  10. No
  11. the pins
  12. False
  13. True
  14. True
  15. a digital thermometer
  16. it starts again
  17. a digital alarm clock
  18. microcontroller
  19. the power LED
  20. a spinning top
  21. keeps the voltage steady
  22. False
  23. False
  24. a candle
  25. a wind-up toy
  26. uploaded over USB
  27. USB or a 9 V battery
  28. laptop
  29. restarts the program
  30. No
  31. microcontroller
  32. True
  33. shows the board is on
  34. the USB port
  35. False
  36. the reset button
  37. False
  38. a washing machine
  39. flash memory
  40. laptop

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