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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 324 · 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 restarts the program? (a) the power LED (b) the main chip (c) the reset button (d) the USB port
  2. 2.True or false: a laptop runs many apps at once. (a) True (b) False
  3. 3.True or false: a microcontroller needs much more power. (a) True (b) False
  4. 4.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a washing machine (c) a bicycle bell (d) a hand pump
  5. 5.Which job is done by the reset button? (a) restarts the program (b) connect sensors and LEDs (c) runs the program (d) shows the board is on
  6. 6.True or false: a microcontroller runs one small program. (a) False (b) True
  7. 7.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  8. 8.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the power LED (c) the voltage regulator (d) the USB port
  9. 9.Which job is done by the voltage regulator? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) shows the board is on
  10. 10.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  11. 11.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  12. 12.True or false: a laptop uses very little power. (a) False (b) True
  13. 13.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  14. 14.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  15. 15.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  16. 16.Which job is done by the USB port? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) runs the program
  17. 17.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  18. 18.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) drawn with a pen (d) sent by sound
  19. 19.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a type of battery (d) a computer on one chip
  20. 20.Which of these has no microcontroller inside? (a) a microwave oven (b) a hand pump (c) a digital thermometer (d) a TV remote
  21. 21.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  22. 22.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  23. 23.Which job is done by the power LED? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) shows the board is on
  24. 24.🤖 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
  25. 25.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  26. 26.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  27. 27.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a wind-up toy (c) a spinning top (d) a digital alarm clock
  28. 28.True or false: a microcontroller uses very little power. (a) True (b) False
  29. 29.Which job is done by the main chip? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) brings power and code
  30. 30.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) flash memory (d) the USB cable
  31. 31.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a washing machine (c) a microwave oven (d) a spinning top
  32. 32.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  33. 33.🤖 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
  34. 34.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the voltage regulator (c) the main chip (d) the USB port
  35. 35.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a spinning top (c) a digital thermometer (d) a candle
  36. 36.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  37. 37.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  38. 38.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the main chip (c) the voltage regulator (d) the power LED
  39. 39.True or false: a laptop has a built-in keyboard. (a) False (b) True
  40. 40.Which of these usually has a microcontroller inside? (a) a hand pump (b) a spinning top (c) a smart watch (d) a candle

Answer key

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

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