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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 95 · 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.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  2. 2.Which job is done by the voltage regulator? (a) brings power and code (b) connect sensors and LEDs (c) keeps the voltage steady (d) restarts the program
  3. 3.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  4. 4.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the reset button (c) the USB port (d) the main chip
  5. 5.Which of these has no microcontroller inside? (a) a TV remote (b) a digital alarm clock (c) a wind-up toy (d) a microwave oven
  6. 6.Which of these has no microcontroller inside? (a) a washing machine (b) a plain wall switch (c) a digital alarm clock (d) a toy robot
  7. 7.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a candle (c) a bicycle bell (d) a toy robot
  8. 8.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) the power LED (d) flash memory
  9. 9.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the main chip (c) the pins (d) the power LED
  10. 10.Which job is done by the pins? (a) restarts the program (b) connect sensors and LEDs (c) shows the board is on (d) runs the program
  11. 11.True or false: a laptop runs one small program. (a) False (b) True
  12. 12.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the USB port (c) the voltage regulator (d) the pins
  13. 13.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  14. 14.True or false: a laptop uses very little power. (a) True (b) False
  15. 15.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a big desktop computer (d) a kind of bulb
  16. 16.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a washing machine (c) a candle (d) a spinning top
  17. 17.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a spinning top (d) a microwave oven
  18. 18.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a digital alarm clock (d) a plain wall switch
  19. 19.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  20. 20.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  21. 21.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) sent by sound (d) uploaded over USB
  22. 22.True or false: a microcontroller runs many apps at once. (a) True (b) False
  23. 23.True or false: a laptop runs many apps at once. (a) True (b) False
  24. 24.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the main chip (c) the USB port (d) the pins
  25. 25.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  26. 26.Which job is done by the USB port? (a) runs the program (b) keeps the voltage steady (c) brings power and code (d) shows the board is on
  27. 27.Which of these has no microcontroller inside? (a) a washing machine (b) a TV remote (c) a microwave oven (d) a spinning top
  28. 28.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  29. 29.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  30. 30.Which job is done by the reset button? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) shows the board is on
  31. 31.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  32. 32.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  33. 33.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the USB port (c) the pins (d) the reset button
  34. 34.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the reset button (c) the voltage regulator (d) the power LED
  35. 35.True or false: a laptop needs much more power. (a) False (b) True
  36. 36.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a spinning top (d) a digital thermometer
  37. 37.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) the board breaks (d) it stops forever
  38. 38.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  39. 39.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  40. 40.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes

Answer key

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

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