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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 210 · 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 of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a smart watch (d) a plain wall switch
  2. 2.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  3. 3.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  4. 4.Which job is done by the power LED? (a) connect sensors and LEDs (b) runs the program (c) shows the board is on (d) brings power and code
  5. 5.True or false: a laptop uses very little power. (a) True (b) False
  6. 6.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the main chip (c) the pins (d) the voltage regulator
  7. 7.Which job is done by the reset button? (a) brings power and code (b) shows the board is on (c) connect sensors and LEDs (d) restarts the program
  8. 8.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the power LED (c) the voltage regulator (d) the reset button
  9. 9.🤖 What is a microcontroller? (a) a big desktop computer (b) a computer on one chip (c) a kind of bulb (d) a type of battery
  10. 10.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  11. 11.True or false: a laptop runs many apps at once. (a) False (b) True
  12. 12.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  13. 13.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
  14. 14.True or false: a laptop has no screen of its own. (a) False (b) True
  15. 15.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  16. 16.Which of these has no microcontroller inside? (a) a candle (b) a smart watch (c) a microwave oven (d) a TV remote
  17. 17.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the USB port (c) the power LED (d) the pins
  18. 18.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  19. 19.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) it stops forever (d) the board breaks
  20. 20.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  21. 21.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the USB port (c) the pins (d) the power LED
  22. 22.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
  23. 23.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  24. 24.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) flash memory (d) the USB cable
  25. 25.Which of these has no microcontroller inside? (a) a TV remote (b) a digital alarm clock (c) a digital thermometer (d) a hand pump
  26. 26.Which of these has no microcontroller inside? (a) a TV remote (b) a smart watch (c) a digital alarm clock (d) a spinning top
  27. 27.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  28. 28.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  29. 29.True or false: a laptop has a built-in keyboard. (a) True (b) False
  30. 30.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  31. 31.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the reset button (c) the USB port (d) the pins
  32. 32.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital alarm clock (c) a bicycle bell (d) a wind-up toy
  33. 33.True or false: a laptop needs much more power. (a) True (b) False
  34. 34.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  35. 35.Which of these has no microcontroller inside? (a) a digital thermometer (b) a TV remote (c) a plain wall switch (d) a toy robot
  36. 36.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  37. 37.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the pins (c) the USB port (d) the main chip
  38. 38.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a washing machine (d) a wind-up toy
  39. 39.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  40. 40.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) bare mains wires (d) a 230 V cable

Answer key

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

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