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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 96 · 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 has no microcontroller inside? (a) a spinning top (b) a digital thermometer (c) a digital alarm clock (d) a smart watch
  2. 2.True or false: a laptop runs many apps at once. (a) True (b) False
  3. 3.Which job is done by the main chip? (a) shows the board is on (b) restarts the program (c) connect sensors and LEDs (d) runs the program
  4. 4.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  5. 5.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  6. 6.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the USB cable (d) the resistor
  7. 7.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  8. 8.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  9. 9.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the power LED (c) the USB port (d) the pins
  10. 10.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  11. 11.True or false: a laptop runs one small program. (a) True (b) False
  12. 12.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  13. 13.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the USB port (c) the pins (d) the reset button
  14. 14.True or false: a microcontroller runs many apps at once. (a) True (b) False
  15. 15.Which of these has no microcontroller inside? (a) a smart watch (b) a digital alarm clock (c) a microwave oven (d) a candle
  16. 16.True or false: a microcontroller has no screen of its own. (a) True (b) False
  17. 17.True or false: a microcontroller needs much more power. (a) False (b) True
  18. 18.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) the board breaks (d) it stops forever
  19. 19.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a plain wall switch (c) a candle (d) a digital alarm clock
  20. 20.Which of these has no microcontroller inside? (a) a TV remote (b) a plain wall switch (c) a digital thermometer (d) a washing machine
  21. 21.Which job is done by the USB port? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) connect sensors and LEDs
  22. 22.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  23. 23.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) a wall socket directly (d) bare mains wires
  24. 24.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  25. 25.Which job is done by the pins? (a) connect sensors and LEDs (b) runs the program (c) keeps the voltage steady (d) brings power and code
  26. 26.Which job is done by the reset button? (a) runs the program (b) brings power and code (c) shows the board is on (d) restarts the program
  27. 27.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the power LED (c) the pins (d) the main chip
  28. 28.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  29. 29.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a candle (d) a spinning top
  30. 30.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  31. 31.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the USB port (c) the pins (d) the power LED
  32. 32.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) runs the program (c) restarts the program (d) brings power and code
  33. 33.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  34. 34.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  35. 35.Which of these usually has a microcontroller inside? (a) a smart watch (b) a candle (c) a bicycle bell (d) a hand pump
  36. 36.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  37. 37.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  38. 38.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a computer on one chip (d) a kind of bulb
  39. 39.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  40. 40.True or false: a laptop has no screen of its own. (a) True (b) False

Answer key

  1. a spinning top
  2. True
  3. runs the program
  4. No
  5. No
  6. flash memory
  7. microcontroller
  8. False
  9. the pins
  10. False
  11. False
  12. laptop
  13. the power LED
  14. False
  15. a candle
  16. True
  17. False
  18. it starts again
  19. a digital alarm clock
  20. a plain wall switch
  21. brings power and code
  22. False
  23. USB or a 9 V battery
  24. laptop
  25. connect sensors and LEDs
  26. restarts the program
  27. the voltage regulator
  28. No
  29. a microwave oven
  30. microcontroller
  31. the USB port
  32. keeps the voltage steady
  33. False
  34. Yes
  35. a smart watch
  36. Yes
  37. microcontroller
  38. a computer on one chip
  39. True
  40. False

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