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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 461 · 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 hand pump usually has a microcontroller inside. (a) True (b) False
  3. 3.True or false: a laptop runs many apps at once. (a) False (b) True
  4. 4.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the main chip (c) the power LED (d) the USB port
  5. 5.True or false: a microcontroller needs much more power. (a) True (b) False
  6. 6.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  7. 7.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  8. 8.Which job is done by the reset button? (a) keeps the voltage steady (b) brings power and code (c) runs the program (d) restarts the program
  9. 9.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) shows the board is on (c) restarts the program (d) runs the program
  10. 10.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a kind of bulb (d) a big desktop computer
  11. 11.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a hand pump (d) a bicycle bell
  12. 12.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  13. 13.True or false: a laptop runs one small program. (a) True (b) False
  14. 14.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  15. 15.Which of these has no microcontroller inside? (a) a microwave oven (b) a toy robot (c) a digital alarm clock (d) a spinning top
  16. 16.Which of these has no microcontroller inside? (a) a toy robot (b) a bicycle bell (c) a washing machine (d) a digital thermometer
  17. 17.True or false: a laptop uses very little power. (a) True (b) False
  18. 18.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the USB port (c) the voltage regulator (d) the power LED
  19. 19.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  20. 20.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the power LED (d) the resistor
  21. 21.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  22. 22.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) the board breaks (d) it starts again
  23. 23.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) bare mains wires (d) USB or a 9 V battery
  24. 24.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  25. 25.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  26. 26.True or false: a laptop has a built-in keyboard. (a) False (b) True
  27. 27.Which of these usually has a microcontroller inside? (a) a spinning top (b) a TV remote (c) a wind-up toy (d) a candle
  28. 28.Which of these has no microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a washing machine (d) a digital thermometer
  29. 29.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the power LED (c) the reset button (d) the USB port
  30. 30.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  31. 31.True or false: a candle has no microcontroller inside. (a) False (b) True
  32. 32.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the pins (c) the power LED (d) the voltage regulator
  33. 33.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  34. 34.Which of these usually has a microcontroller inside? (a) a spinning top (b) a hand pump (c) a smart watch (d) a bicycle bell
  35. 35.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a microwave oven (c) a candle (d) a washing machine
  36. 36.True or false: a laptop has no screen of its own. (a) False (b) True
  37. 37.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the USB port (c) the voltage regulator (d) the main chip
  38. 38.Which job is done by the main chip? (a) shows the board is on (b) connect sensors and LEDs (c) brings power and code (d) runs the program
  39. 39.Which job is done by the pins? (a) restarts the program (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  40. 40.True or false: a microcontroller runs many apps at once. (a) True (b) False

Answer key

  1. True
  2. False
  3. True
  4. the main chip
  5. False
  6. Yes
  7. laptop
  8. restarts the program
  9. keeps the voltage steady
  10. a computer on one chip
  11. a microwave oven
  12. True
  13. False
  14. No
  15. a spinning top
  16. a bicycle bell
  17. False
  18. the voltage regulator
  19. Yes
  20. flash memory
  21. laptop
  22. it starts again
  23. USB or a 9 V battery
  24. True
  25. False
  26. True
  27. a TV remote
  28. a wind-up toy
  29. the USB port
  30. Yes
  31. True
  32. the reset button
  33. True
  34. a smart watch
  35. a candle
  36. False
  37. the pins
  38. runs the program
  39. connect sensors and LEDs
  40. False

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