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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 413 · 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 microcontroller has no screen of its own. (a) True (b) False
  2. 2.True or false: a laptop runs many apps at once. (a) True (b) False
  3. 3.Which of these has no microcontroller inside? (a) a TV remote (b) a spinning top (c) a microwave oven (d) a digital alarm clock
  4. 4.🤖 What is a microcontroller? (a) a computer on one chip (b) a kind of bulb (c) a big desktop computer (d) a type of battery
  5. 5.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  6. 6.True or false: a microcontroller uses very little power. (a) True (b) False
  7. 7.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  8. 8.True or false: a microcontroller runs one small program. (a) False (b) True
  9. 9.🤖 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
  10. 10.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  11. 11.True or false: a microcontroller needs much more power. (a) True (b) False
  12. 12.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  13. 13.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  14. 14.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a digital thermometer (d) a bicycle bell
  15. 15.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  16. 16.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  17. 17.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  18. 18.Which job is done by the main chip? (a) runs the program (b) brings power and code (c) shows the board is on (d) keeps the voltage steady
  19. 19.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the main chip (c) the USB port (d) the voltage regulator
  20. 20.Which job is done by the power LED? (a) shows the board is on (b) connect sensors and LEDs (c) restarts the program (d) runs the program
  21. 21.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the power LED (c) the main chip (d) the reset button
  22. 22.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  23. 23.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a toy robot (d) a bicycle bell
  24. 24.Which job is done by the reset button? (a) connect sensors and LEDs (b) keeps the voltage steady (c) restarts the program (d) brings power and code
  25. 25.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  26. 26.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  27. 27.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  28. 28.Which of these has no microcontroller inside? (a) a smart watch (b) a microwave oven (c) a washing machine (d) a plain wall switch
  29. 29.Which of these has no microcontroller inside? (a) a bicycle bell (b) a washing machine (c) a digital alarm clock (d) a smart watch
  30. 30.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  31. 31.🤖 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
  32. 32.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  33. 33.True or false: a laptop has a built-in keyboard. (a) False (b) True
  34. 34.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  35. 35.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  36. 36.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it deletes itself (d) it stops forever
  37. 37.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the pins (c) the reset button (d) the voltage regulator
  38. 38.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
  39. 39.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  40. 40.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False

Answer key

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

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