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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 653 · 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 toy robot usually has a microcontroller inside. (a) True (b) False
  2. 2.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) sent by sound (c) typed on the chip (d) drawn with a pen
  3. 3.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  4. 4.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the pins (c) the voltage regulator (d) the reset button
  5. 5.Which job is done by the USB port? (a) brings power and code (b) restarts the program (c) connect sensors and LEDs (d) keeps the voltage steady
  6. 6.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a plain wall switch (c) a microwave oven (d) a spinning top
  7. 7.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) a wall socket directly (d) USB or a 9 V battery
  8. 8.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a bicycle bell (d) a TV remote
  9. 9.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the main chip (c) the power LED (d) the voltage regulator
  10. 10.Which of these has no microcontroller inside? (a) a microwave oven (b) a candle (c) a digital alarm clock (d) a digital thermometer
  11. 11.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) it stops forever (d) the board breaks
  12. 12.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  13. 13.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the power LED (c) the voltage regulator (d) the reset button
  14. 14.🤖 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
  15. 15.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  16. 16.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  17. 17.Which job is done by the reset button? (a) shows the board is on (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
  18. 18.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  19. 19.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  20. 20.🤖 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
  21. 21.Which of these has no microcontroller inside? (a) a smart watch (b) a toy robot (c) a TV remote (d) a spinning top
  22. 22.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  23. 23.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a toy robot (d) a wind-up toy
  24. 24.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  25. 25.Which job is done by the power LED? (a) keeps the voltage steady (b) connect sensors and LEDs (c) shows the board is on (d) runs the program
  26. 26.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  27. 27.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  28. 28.True or false: a microcontroller uses very little power. (a) False (b) True
  29. 29.Which job is done by the pins? (a) shows the board is on (b) keeps the voltage steady (c) brings power and code (d) connect sensors and LEDs
  30. 30.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  31. 31.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a candle (c) a toy robot (d) a wind-up toy
  32. 32.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  33. 33.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  34. 34.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  35. 35.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  36. 36.Which job is done by the voltage regulator? (a) runs the program (b) shows the board is on (c) keeps the voltage steady (d) brings power and code
  37. 37.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a washing machine (c) a bicycle bell (d) a microwave oven
  38. 38.True or false: a laptop uses very little power. (a) True (b) False
  39. 39.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  40. 40.True or false: a laptop needs much more power. (a) False (b) True

Answer key

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

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