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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 544 · 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 is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) a wall socket directly (c) bare mains wires (d) USB or a 9 V battery
  2. 2.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  3. 3.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a wind-up toy (d) a digital thermometer
  4. 4.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  5. 5.True or false: a microcontroller runs one small program. (a) True (b) False
  6. 6.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the power LED (d) the resistor
  7. 7.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the USB port (c) the voltage regulator (d) the main chip
  8. 8.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the main chip (c) the power LED (d) the reset button
  9. 9.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  10. 10.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  11. 11.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  12. 12.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it starts again (d) it deletes itself
  13. 13.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  14. 14.Which job is done by the USB port? (a) brings power and code (b) keeps the voltage steady (c) runs the program (d) restarts the program
  15. 15.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  16. 16.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the main chip (c) the power LED (d) the voltage regulator
  17. 17.Which of these has no microcontroller inside? (a) a spinning top (b) a microwave oven (c) a washing machine (d) a TV remote
  18. 18.Which job is done by the main chip? (a) runs the program (b) brings power and code (c) connect sensors and LEDs (d) shows the board is on
  19. 19.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a type of battery (d) a computer on one chip
  20. 20.True or false: a laptop needs much more power. (a) False (b) True
  21. 21.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  22. 22.Which job is done by the reset button? (a) connect sensors and LEDs (b) brings power and code (c) runs the program (d) restarts the program
  23. 23.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  24. 24.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a toy robot (c) a hand pump (d) a digital thermometer
  25. 25.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  26. 26.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  27. 27.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  28. 28.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the main chip (c) the reset button (d) the voltage regulator
  29. 29.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  30. 30.Which job is done by the power LED? (a) shows the board is on (b) brings power and code (c) connect sensors and LEDs (d) restarts the program
  31. 31.True or false: a microcontroller runs many apps at once. (a) True (b) False
  32. 32.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  33. 33.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  34. 34.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a TV remote (c) a candle (d) a digital thermometer
  35. 35.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a smart watch (c) a wind-up toy (d) a hand pump
  36. 36.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  37. 37.True or false: a laptop runs many apps at once. (a) False (b) True
  38. 38.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) drawn with a pen (d) typed on the chip
  39. 39.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  40. 40.Which job is done by the pins? (a) connect sensors and LEDs (b) restarts the program (c) runs the program (d) brings power and code

Answer key

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

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