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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 373 · 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 digital thermometer (b) a spinning top (c) a bicycle bell (d) a plain wall switch
  2. 2.Which job is done by the pins? (a) connect sensors and LEDs (b) keeps the voltage steady (c) brings power and code (d) restarts the program
  3. 3.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  4. 4.True or false: a microcontroller runs one small program. (a) True (b) False
  5. 5.🧭 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
  6. 6.Which of these has no microcontroller inside? (a) a washing machine (b) a hand pump (c) a smart watch (d) a digital alarm clock
  7. 7.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  8. 8.Which of these has no microcontroller inside? (a) a smart watch (b) a digital alarm clock (c) a wind-up toy (d) a toy robot
  9. 9.True or false: a laptop has no screen of its own. (a) False (b) True
  10. 10.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a wind-up toy (c) a washing machine (d) a candle
  11. 11.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the main chip (c) the voltage regulator (d) the pins
  12. 12.Which job is done by the power LED? (a) shows the board is on (b) runs the program (c) restarts the program (d) connect sensors and LEDs
  13. 13.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it starts again (d) it stops forever
  14. 14.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  15. 15.True or false: a laptop uses very little power. (a) True (b) False
  16. 16.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the USB cable (c) the resistor (d) the power LED
  17. 17.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  18. 18.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) drawn with a pen (c) typed on the chip (d) sent by sound
  19. 19.True or false: a laptop runs many apps at once. (a) False (b) True
  20. 20.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a kind of bulb (d) a computer on one chip
  21. 21.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  22. 22.🤖 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
  23. 23.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the main chip (c) the pins (d) the power LED
  24. 24.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  25. 25.Which job is done by the reset button? (a) restarts the program (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  26. 26.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the voltage regulator (c) the power LED (d) the reset button
  27. 27.Which of these has no microcontroller inside? (a) a toy robot (b) a plain wall switch (c) a microwave oven (d) a washing machine
  28. 28.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the power LED (c) the main chip (d) the USB port
  29. 29.Which job is done by the main chip? (a) restarts the program (b) runs the program (c) connect sensors and LEDs (d) keeps the voltage steady
  30. 30.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  31. 31.True or false: a microcontroller needs much more power. (a) False (b) True
  32. 32.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  33. 33.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  34. 34.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  35. 35.True or false: a microcontroller has no screen of its own. (a) False (b) True
  36. 36.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  37. 37.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  38. 38.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the power LED (d) the main chip
  39. 39.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  40. 40.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True

Answer key

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

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