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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 410 · 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 smart watch (b) a candle (c) a washing machine (d) a digital alarm clock
  2. 2.Which of these has no microcontroller inside? (a) a digital thermometer (b) a washing machine (c) a wind-up toy (d) a digital alarm clock
  3. 3.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  4. 4.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  5. 5.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
  6. 6.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  7. 7.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  8. 8.True or false: a laptop has no screen of its own. (a) True (b) False
  9. 9.True or false: a microcontroller needs much more power. (a) True (b) False
  10. 10.True or false: a microcontroller uses very little power. (a) True (b) False
  11. 11.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the pins (c) the main chip (d) the power LED
  12. 12.Which job is done by the main chip? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) shows the board is on
  13. 13.True or false: a microcontroller runs one small program. (a) True (b) False
  14. 14.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  15. 15.🤖 What is a microcontroller? (a) a computer on one chip (b) a kind of bulb (c) a big desktop computer (d) a type of battery
  16. 16.Which of these has no microcontroller inside? (a) a spinning top (b) a microwave oven (c) a smart watch (d) a washing machine
  17. 17.Which job is done by the reset button? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) keeps the voltage steady
  18. 18.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  19. 19.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  20. 20.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the main chip (c) the reset button (d) the USB port
  21. 21.Which of these has no microcontroller inside? (a) a toy robot (b) a microwave oven (c) a smart watch (d) a bicycle bell
  22. 22.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) USB or a 9 V battery (d) a 230 V cable
  23. 23.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  24. 24.Which job is done by the power LED? (a) shows the board is on (b) keeps the voltage steady (c) restarts the program (d) brings power and code
  25. 25.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) it stops forever (d) the board breaks
  26. 26.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  27. 27.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  28. 28.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) uploaded over USB (d) typed on the chip
  29. 29.Which job is done by the USB port? (a) shows the board is on (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
  30. 30.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  31. 31.🤖 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
  32. 32.Which of these usually has a microcontroller inside? (a) a hand pump (b) a spinning top (c) a digital thermometer (d) a wind-up toy
  33. 33.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the pins (c) the voltage regulator (d) the USB port
  34. 34.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  35. 35.True or false: a laptop runs one small program. (a) False (b) True
  36. 36.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the main chip (c) the pins (d) the power LED
  37. 37.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  38. 38.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  39. 39.Which of these usually has a microcontroller inside? (a) a spinning top (b) a digital alarm clock (c) a hand pump (d) a plain wall switch
  40. 40.True or false: a spinning top has no microcontroller inside. (a) False (b) True

Answer key

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

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