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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 167 · 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.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  2. 2.Which job is done by the pins? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) keeps the voltage steady
  3. 3.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the reset button (c) the USB port (d) the pins
  4. 4.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the power LED (c) the reset button (d) the USB port
  5. 5.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  6. 6.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a TV remote (c) a candle (d) a bicycle bell
  7. 7.True or false: a microcontroller uses very little power. (a) True (b) False
  8. 8.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  9. 9.Which job is done by the USB port? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) runs the program
  10. 10.True or false: a laptop runs many apps at once. (a) False (b) True
  11. 11.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  12. 12.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the power LED (c) the pins (d) the voltage regulator
  13. 13.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) restarts the program (c) keeps the voltage steady (d) brings power and code
  14. 14.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  15. 15.True or false: a laptop has no screen of its own. (a) False (b) True
  16. 16.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the USB port (c) the voltage regulator (d) the reset button
  17. 17.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  18. 18.Which job is done by the main chip? (a) shows the board is on (b) connect sensors and LEDs (c) keeps the voltage steady (d) runs the program
  19. 19.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) the board breaks (d) it deletes itself
  20. 20.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  21. 21.True or false: a laptop runs one small program. (a) False (b) True
  22. 22.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  23. 23.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  24. 24.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a spinning top (d) a bicycle bell
  25. 25.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  26. 26.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  27. 27.True or false: a laptop has a built-in keyboard. (a) False (b) True
  28. 28.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a hand pump (d) a toy robot
  29. 29.Which of these usually has a microcontroller inside? (a) a smart watch (b) a plain wall switch (c) a bicycle bell (d) a wind-up toy
  30. 30.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  31. 31.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a wall socket directly (d) a 230 V cable
  32. 32.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the USB cable (c) the power LED (d) flash memory
  33. 33.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  34. 34.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  35. 35.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  36. 36.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  37. 37.Which of these has no microcontroller inside? (a) a smart watch (b) a candle (c) a TV remote (d) a washing machine
  38. 38.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  39. 39.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  40. 40.Which of these has no microcontroller inside? (a) a TV remote (b) a smart watch (c) a microwave oven (d) a bicycle bell

Answer key

  1. True
  2. connect sensors and LEDs
  3. the reset button
  4. the USB port
  5. microcontroller
  6. a TV remote
  7. True
  8. No
  9. brings power and code
  10. True
  11. No
  12. the pins
  13. keeps the voltage steady
  14. No
  15. False
  16. the voltage regulator
  17. True
  18. runs the program
  19. it starts again
  20. microcontroller
  21. False
  22. Yes
  23. True
  24. a microwave oven
  25. False
  26. True
  27. True
  28. a toy robot
  29. a smart watch
  30. False
  31. USB or a 9 V battery
  32. flash memory
  33. No
  34. False
  35. No
  36. Yes
  37. a candle
  38. False
  39. Yes
  40. a bicycle bell

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