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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 743 · 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 pins? (a) brings power and code (b) runs the program (c) restarts the program (d) connect sensors and LEDs
  2. 2.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  3. 3.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  4. 4.Which of these has no microcontroller inside? (a) a washing machine (b) a wind-up toy (c) a digital alarm clock (d) a smart watch
  5. 5.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  6. 6.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the voltage regulator (c) the pins (d) the USB port
  7. 7.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) USB or a 9 V battery (d) a 230 V cable
  8. 8.Which job is done by the reset button? (a) runs the program (b) keeps the voltage steady (c) restarts the program (d) connect sensors and LEDs
  9. 9.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  10. 10.Which of these has no microcontroller inside? (a) a toy robot (b) a plain wall switch (c) a TV remote (d) a washing machine
  11. 11.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the reset button (c) the power LED (d) the USB port
  12. 12.Which job is done by the main chip? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) keeps the voltage steady
  13. 13.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  14. 14.Which job is done by the USB port? (a) brings power and code (b) keeps the voltage steady (c) runs the program (d) connect sensors and LEDs
  15. 15.True or false: a microcontroller has no screen of its own. (a) True (b) False
  16. 16.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  17. 17.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  18. 18.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  19. 19.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  20. 20.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  21. 21.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  22. 22.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a washing machine (d) a candle
  23. 23.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  24. 24.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  25. 25.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  26. 26.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a kind of bulb (d) a computer on one chip
  27. 27.🧭 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 voltage regulator
  28. 28.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  29. 29.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  30. 30.True or false: a microcontroller runs one small program. (a) True (b) False
  31. 31.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  32. 32.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  33. 33.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  34. 34.True or false: a laptop needs much more power. (a) False (b) True
  35. 35.Which job is done by the power LED? (a) keeps the voltage steady (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  36. 36.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  37. 37.True or false: a microcontroller uses very little power. (a) True (b) False
  38. 38.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) uploaded over USB (d) typed on the chip
  39. 39.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  40. 40.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) it deletes itself (d) the board breaks

Answer key

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

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