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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 108 · 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 job is done by the power LED? (a) connect sensors and LEDs (b) shows the board is on (c) runs the program (d) brings power and code
  2. 2.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the reset button (c) the power LED (d) the main chip
  3. 3.True or false: a microcontroller has no screen of its own. (a) False (b) True
  4. 4.Which job is done by the main chip? (a) brings power and code (b) runs the program (c) shows the board is on (d) connect sensors and LEDs
  5. 5.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the power LED (c) the main chip (d) the reset button
  6. 6.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  7. 7.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a computer on one chip (d) a type of battery
  8. 8.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  9. 9.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) it starts again (d) the board breaks
  10. 10.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  11. 11.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  12. 12.Which of these has no microcontroller inside? (a) a microwave oven (b) a spinning top (c) a digital alarm clock (d) a washing machine
  13. 13.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) sent by sound (d) drawn with a pen
  14. 14.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital alarm clock (c) a hand pump (d) a candle
  15. 15.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  16. 16.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a digital thermometer (d) a bicycle bell
  17. 17.Which job is done by the USB port? (a) keeps the voltage steady (b) connect sensors and LEDs (c) runs the program (d) brings power and code
  18. 18.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  19. 19.Which of these has no microcontroller inside? (a) a smart watch (b) a digital thermometer (c) a candle (d) a TV remote
  20. 20.True or false: a laptop runs many apps at once. (a) True (b) False
  21. 21.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  22. 22.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the reset button (c) the USB port (d) the power LED
  23. 23.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  24. 24.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) brings power and code (c) shows the board is on (d) keeps the voltage steady
  25. 25.True or false: a laptop uses very little power. (a) True (b) False
  26. 26.Which job is done by the reset button? (a) runs the program (b) shows the board is on (c) restarts the program (d) connect sensors and LEDs
  27. 27.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  28. 28.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  29. 29.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  30. 30.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  31. 31.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  32. 32.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the voltage regulator (c) the reset button (d) the main chip
  33. 33.True or false: a laptop has no screen of its own. (a) True (b) False
  34. 34.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  35. 35.Which of these has no microcontroller inside? (a) a washing machine (b) a plain wall switch (c) a toy robot (d) a digital thermometer
  36. 36.True or false: a microcontroller uses very little power. (a) True (b) False
  37. 37.Which job is done by the pins? (a) connect sensors and LEDs (b) shows the board is on (c) brings power and code (d) restarts the program
  38. 38.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  39. 39.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  40. 40.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) USB or a 9 V battery (d) a wall socket directly

Answer key

  1. shows the board is on
  2. the USB port
  3. True
  4. runs the program
  5. the power LED
  6. True
  7. a computer on one chip
  8. No
  9. it starts again
  10. False
  11. False
  12. a spinning top
  13. uploaded over USB
  14. a digital alarm clock
  15. False
  16. a digital thermometer
  17. brings power and code
  18. False
  19. a candle
  20. True
  21. Yes
  22. the voltage regulator
  23. Yes
  24. keeps the voltage steady
  25. False
  26. restarts the program
  27. False
  28. microcontroller
  29. True
  30. No
  31. Yes
  32. the main chip
  33. False
  34. No
  35. a plain wall switch
  36. True
  37. connect sensors and LEDs
  38. False
  39. Yes
  40. USB or a 9 V battery

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