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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 512 · 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.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  2. 2.Which job is done by the USB port? (a) connect sensors and LEDs (b) runs the program (c) shows the board is on (d) brings power and code
  3. 3.Which of these has no microcontroller inside? (a) a plain wall switch (b) a toy robot (c) a smart watch (d) a TV remote
  4. 4.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the power LED (d) the USB cable
  5. 5.True or false: a laptop uses very little power. (a) False (b) True
  6. 6.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  7. 7.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  8. 8.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it stops forever (d) it deletes itself
  9. 9.Which job is done by the reset button? (a) brings power and code (b) shows the board is on (c) connect sensors and LEDs (d) restarts the program
  10. 10.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  11. 11.Which job is done by the voltage regulator? (a) shows the board is on (b) runs the program (c) connect sensors and LEDs (d) keeps the voltage steady
  12. 12.Which of these has no microcontroller inside? (a) a microwave oven (b) a spinning top (c) a washing machine (d) a smart watch
  13. 13.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the USB port (c) the voltage regulator (d) the reset button
  14. 14.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  15. 15.True or false: a laptop runs many apps at once. (a) False (b) True
  16. 16.True or false: a microcontroller uses very little power. (a) False (b) True
  17. 17.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  18. 18.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a kind of bulb (d) a computer on one chip
  19. 19.Which job is done by the main chip? (a) connect sensors and LEDs (b) brings power and code (c) keeps the voltage steady (d) runs the program
  20. 20.True or false: a microcontroller needs much more power. (a) True (b) False
  21. 21.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a candle (d) a washing machine
  22. 22.True or false: a microcontroller runs one small program. (a) False (b) True
  23. 23.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  24. 24.Which of these has no microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a digital alarm clock (d) a smart watch
  25. 25.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  26. 26.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  27. 27.Which job is done by the power LED? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) shows the board is on
  28. 28.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the main chip (c) the pins (d) the USB port
  29. 29.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  30. 30.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  31. 31.True or false: a laptop has no screen of its own. (a) False (b) True
  32. 32.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  33. 33.True or false: a laptop has a built-in keyboard. (a) True (b) False
  34. 34.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the pins (c) the main chip (d) the power LED
  35. 35.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  36. 36.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) sent by sound (d) drawn with a pen
  37. 37.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  38. 38.Which of these usually has a microcontroller inside? (a) a toy robot (b) a bicycle bell (c) a plain wall switch (d) a spinning top
  39. 39.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the reset button (c) the USB port (d) the power LED
  40. 40.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No

Answer key

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

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