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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 478 · 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 connect sensors and LEDs? (a) the USB port (b) the pins (c) the main chip (d) the voltage regulator
  2. 2.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  3. 3.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a wind-up toy (d) a washing machine
  4. 4.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  5. 5.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) the board breaks (d) it stops forever
  6. 6.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  7. 7.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  8. 8.True or false: a microcontroller uses very little power. (a) True (b) False
  9. 9.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  10. 10.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  11. 11.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  12. 12.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  13. 13.🤖 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
  14. 14.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) the resistor (d) flash memory
  15. 15.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  16. 16.True or false: a laptop runs one small program. (a) False (b) True
  17. 17.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  18. 18.Which of these has no microcontroller inside? (a) a plain wall switch (b) a TV remote (c) a toy robot (d) a digital thermometer
  19. 19.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  20. 20.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the pins (c) the USB port (d) the reset button
  21. 21.Which job is done by the voltage regulator? (a) restarts the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) runs the program
  22. 22.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  23. 23.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a smart watch (d) a hand pump
  24. 24.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  25. 25.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  26. 26.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  27. 27.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the voltage regulator (c) the reset button (d) the USB port
  28. 28.True or false: a laptop has a built-in keyboard. (a) False (b) True
  29. 29.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a computer on one chip (d) a kind of bulb
  30. 30.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the voltage regulator (c) the main chip (d) the reset button
  31. 31.True or false: a laptop has no screen of its own. (a) True (b) False
  32. 32.True or false: a microcontroller runs many apps at once. (a) True (b) False
  33. 33.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  34. 34.True or false: a laptop needs much more power. (a) True (b) False
  35. 35.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) typed on the chip (d) sent by sound
  36. 36.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  37. 37.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  38. 38.True or false: a microcontroller runs one small program. (a) True (b) False
  39. 39.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  40. 40.True or false: a microcontroller has no screen of its own. (a) True (b) False

Answer key

  1. the pins
  2. False
  3. a washing machine
  4. Yes
  5. it starts again
  6. No
  7. Yes
  8. True
  9. laptop
  10. microcontroller
  11. Yes
  12. laptop
  13. USB or a 9 V battery
  14. flash memory
  15. No
  16. False
  17. Yes
  18. a plain wall switch
  19. microcontroller
  20. the reset button
  21. keeps the voltage steady
  22. No
  23. a smart watch
  24. Yes
  25. Yes
  26. True
  27. the USB port
  28. True
  29. a computer on one chip
  30. the main chip
  31. False
  32. False
  33. False
  34. True
  35. uploaded over USB
  36. No
  37. No
  38. True
  39. microcontroller
  40. True

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