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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 686 · 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.True or false: a laptop uses very little power. (a) True (b) False
  2. 2.True or false: a laptop needs much more power. (a) False (b) True
  3. 3.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the power LED (c) the pins (d) the reset button
  4. 4.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it starts again (d) it stops forever
  5. 5.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a kind of bulb (d) a computer on one chip
  6. 6.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  7. 7.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  8. 8.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  9. 9.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  10. 10.True or false: a laptop runs many apps at once. (a) False (b) True
  11. 11.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  12. 12.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a smart watch (d) a plain wall switch
  13. 13.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  14. 14.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  15. 15.Which job is done by the power LED? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) restarts the program
  16. 16.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a digital thermometer (c) a microwave oven (d) a plain wall switch
  17. 17.Which job is done by the reset button? (a) restarts the program (b) shows the board is on (c) runs the program (d) brings power and code
  18. 18.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  19. 19.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  20. 20.Which job is done by the main chip? (a) runs the program (b) keeps the voltage steady (c) brings power and code (d) connect sensors and LEDs
  21. 21.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  22. 22.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the pins (c) the reset button (d) the voltage regulator
  23. 23.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) runs the program (c) brings power and code (d) shows the board is on
  24. 24.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) sent by sound (d) uploaded over USB
  25. 25.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  26. 26.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  27. 27.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  28. 28.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  29. 29.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
  30. 30.True or false: a laptop runs one small program. (a) False (b) True
  31. 31.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the reset button (c) the power LED (d) the USB port
  32. 32.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a bicycle bell (d) a digital alarm clock
  33. 33.Which job is done by the USB port? (a) keeps the voltage steady (b) brings power and code (c) restarts the program (d) shows the board is on
  34. 34.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  35. 35.True or false: a candle has no microcontroller inside. (a) False (b) True
  36. 36.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a TV remote (d) a plain wall switch
  37. 37.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  38. 38.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the main chip (c) the pins (d) the reset button
  39. 39.Which job is done by the pins? (a) connect sensors and LEDs (b) restarts the program (c) shows the board is on (d) brings power and code
  40. 40.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a washing machine (d) a hand pump

Answer key

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

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