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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 101 · 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 shows the board is on? (a) the reset button (b) the pins (c) the power LED (d) the USB port
  2. 2.True or false: a laptop uses very little power. (a) False (b) True
  3. 3.Which job is done by the power LED? (a) runs the program (b) shows the board is on (c) brings power and code (d) connect sensors and LEDs
  4. 4.True or false: a microcontroller has no screen of its own. (a) True (b) False
  5. 5.True or false: a laptop has no screen of its own. (a) True (b) False
  6. 6.Which job is done by the main chip? (a) connect sensors and LEDs (b) runs the program (c) keeps the voltage steady (d) brings power and code
  7. 7.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  8. 8.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  9. 9.Which of these usually has a microcontroller inside? (a) a spinning top (b) a toy robot (c) a plain wall switch (d) a wind-up toy
  10. 10.Which job is done by the USB port? (a) brings power and code (b) runs the program (c) restarts the program (d) keeps the voltage steady
  11. 11.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the reset button (c) the pins (d) the USB port
  12. 12.Which of these usually has a microcontroller inside? (a) a hand pump (b) a microwave oven (c) a wind-up toy (d) a candle
  13. 13.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital thermometer (c) a washing machine (d) a candle
  14. 14.Which of these usually has a microcontroller inside? (a) a smart watch (b) a plain wall switch (c) a candle (d) a bicycle bell
  15. 15.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) drawn with a pen (d) uploaded over USB
  16. 16.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the pins (c) the voltage regulator (d) the USB port
  17. 17.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  18. 18.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  19. 19.Which of these usually has a microcontroller inside? (a) a spinning top (b) a hand pump (c) a wind-up toy (d) a digital alarm clock
  20. 20.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) a wall socket directly (c) USB or a 9 V battery (d) bare mains wires
  21. 21.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a big desktop computer (d) a computer on one chip
  22. 22.True or false: a laptop has a built-in keyboard. (a) False (b) True
  23. 23.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  24. 24.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  25. 25.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a toy robot (c) a spinning top (d) a digital thermometer
  26. 26.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  27. 27.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the main chip (c) the reset button (d) the USB port
  28. 28.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  29. 29.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) flash memory (d) the USB cable
  30. 30.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  31. 31.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  32. 32.Which of these has no microcontroller inside? (a) a washing machine (b) a smart watch (c) a hand pump (d) a toy robot
  33. 33.Which job is done by the reset button? (a) shows the board is on (b) restarts the program (c) brings power and code (d) connect sensors and LEDs
  34. 34.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  35. 35.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  36. 36.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  37. 37.True or false: a laptop runs one small program. (a) False (b) True
  38. 38.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  39. 39.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  40. 40.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a washing machine (c) a candle (d) a wind-up toy

Answer key

  1. the power LED
  2. False
  3. shows the board is on
  4. True
  5. False
  6. runs the program
  7. Yes
  8. Yes
  9. a toy robot
  10. brings power and code
  11. the pins
  12. a microwave oven
  13. a candle
  14. a smart watch
  15. uploaded over USB
  16. the USB port
  17. False
  18. microcontroller
  19. a digital alarm clock
  20. USB or a 9 V battery
  21. a computer on one chip
  22. True
  23. microcontroller
  24. No
  25. a spinning top
  26. No
  27. the reset button
  28. No
  29. flash memory
  30. True
  31. laptop
  32. a hand pump
  33. restarts the program
  34. True
  35. False
  36. laptop
  37. False
  38. microcontroller
  39. False
  40. a washing machine

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