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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 204 · 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 usually has a microcontroller inside? (a) a plain wall switch (b) a wind-up toy (c) a digital alarm clock (d) a candle
  2. 2.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  3. 3.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  4. 4.Which job is done by the reset button? (a) keeps the voltage steady (b) connect sensors and LEDs (c) shows the board is on (d) restarts the program
  5. 5.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) typed on the chip (d) uploaded over USB
  6. 6.True or false: a microcontroller runs one small program. (a) True (b) False
  7. 7.Which of these usually has a microcontroller inside? (a) a spinning top (b) a washing machine (c) a wind-up toy (d) a plain wall switch
  8. 8.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a spinning top (d) a TV remote
  9. 9.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a wind-up toy (d) a microwave oven
  10. 10.Which of these usually has a microcontroller inside? (a) a candle (b) a toy robot (c) a bicycle bell (d) a hand pump
  11. 11.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  12. 12.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) restarts the program (c) brings power and code (d) shows the board is on
  13. 13.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the voltage regulator (c) the reset button (d) the power LED
  14. 14.True or false: a microcontroller runs many apps at once. (a) True (b) False
  15. 15.Which job is done by the USB port? (a) shows the board is on (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  16. 16.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the USB port (c) the main chip (d) the power LED
  17. 17.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  18. 18.True or false: a laptop needs much more power. (a) True (b) False
  19. 19.True or false: a laptop uses very little power. (a) False (b) True
  20. 20.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a washing machine (c) a wind-up toy (d) a smart watch
  21. 21.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  22. 22.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  23. 23.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the voltage regulator (c) the main chip (d) the pins
  24. 24.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  25. 25.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  26. 26.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  27. 27.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  28. 28.Which job is done by the pins? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) runs the program
  29. 29.Which of these has no microcontroller inside? (a) a digital thermometer (b) a bicycle bell (c) a washing machine (d) a TV remote
  30. 30.Which of these has no microcontroller inside? (a) a microwave oven (b) a washing machine (c) a hand pump (d) a smart watch
  31. 31.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it stops forever (d) it starts again
  32. 32.True or false: a laptop runs many apps at once. (a) False (b) True
  33. 33.Which job is done by the power LED? (a) restarts the program (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  34. 34.True or false: a laptop has no screen of its own. (a) True (b) False
  35. 35.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) USB or a 9 V battery (d) bare mains wires
  36. 36.True or false: a laptop runs one small program. (a) True (b) False
  37. 37.True or false: a laptop has a built-in keyboard. (a) False (b) True
  38. 38.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a smart watch (c) a bicycle bell (d) a candle
  39. 39.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  40. 40.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes

Answer key

  1. a digital alarm clock
  2. False
  3. Yes
  4. restarts the program
  5. uploaded over USB
  6. True
  7. a washing machine
  8. a TV remote
  9. a microwave oven
  10. a toy robot
  11. True
  12. keeps the voltage steady
  13. the reset button
  14. False
  15. brings power and code
  16. the power LED
  17. microcontroller
  18. True
  19. False
  20. a wind-up toy
  21. True
  22. Yes
  23. the main chip
  24. True
  25. microcontroller
  26. False
  27. microcontroller
  28. connect sensors and LEDs
  29. a bicycle bell
  30. a hand pump
  31. it starts again
  32. True
  33. shows the board is on
  34. False
  35. USB or a 9 V battery
  36. False
  37. True
  38. a smart watch
  39. No
  40. No

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