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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 49 · 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.

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

Answer key

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

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