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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 105 · 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 part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the reset button (c) the voltage regulator (d) the pins
  2. 2.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  3. 3.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  4. 4.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  5. 5.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) uploaded over USB (d) drawn with a pen
  6. 6.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  7. 7.Which job is done by the reset button? (a) restarts the program (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  8. 8.True or false: a laptop runs many apps at once. (a) False (b) True
  9. 9.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the power LED (c) the USB port (d) the reset button
  10. 10.Which of these has no microcontroller inside? (a) a toy robot (b) a digital thermometer (c) a candle (d) a digital alarm clock
  11. 11.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  12. 12.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  13. 13.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a toy robot (c) a candle (d) a hand pump
  14. 14.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  15. 15.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  16. 16.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  17. 17.True or false: a laptop uses very little power. (a) True (b) False
  18. 18.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  19. 19.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  20. 20.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  21. 21.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  22. 22.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  23. 23.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a hand pump (c) a washing machine (d) a plain wall switch
  24. 24.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  25. 25.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  26. 26.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  27. 27.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  28. 28.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the power LED (c) the reset button (d) the pins
  29. 29.True or false: a microcontroller uses very little power. (a) True (b) False
  30. 30.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) bare mains wires (d) a wall socket directly
  31. 31.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  32. 32.Which job is done by the power LED? (a) brings power and code (b) connect sensors and LEDs (c) keeps the voltage steady (d) shows the board is on
  33. 33.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) runs the program (c) restarts the program (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 part of a microcontroller board brings power and code? (a) the voltage regulator (b) the reset button (c) the power LED (d) the USB port
  36. 36.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the main chip (c) the reset button (d) the power LED
  37. 37.Which job is done by the pins? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) restarts the program
  38. 38.Which job is done by the main chip? (a) runs the program (b) restarts the program (c) keeps the voltage steady (d) brings power and code
  39. 39.Which of these has no microcontroller inside? (a) a TV remote (b) a digital alarm clock (c) a bicycle bell (d) a microwave oven
  40. 40.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) it deletes itself (d) the board breaks

Answer key

  1. the voltage regulator
  2. False
  3. laptop
  4. Yes
  5. uploaded over USB
  6. Yes
  7. restarts the program
  8. True
  9. the reset button
  10. a candle
  11. True
  12. True
  13. a toy robot
  14. Yes
  15. Yes
  16. False
  17. False
  18. False
  19. laptop
  20. microcontroller
  21. False
  22. False
  23. a washing machine
  24. False
  25. microcontroller
  26. True
  27. True
  28. the pins
  29. True
  30. USB or a 9 V battery
  31. No
  32. shows the board is on
  33. keeps the voltage steady
  34. False
  35. the USB port
  36. the power LED
  37. connect sensors and LEDs
  38. runs the program
  39. a bicycle bell
  40. it starts again

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