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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 533 · 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 of these has no microcontroller inside? (a) a TV remote (b) a digital thermometer (c) a digital alarm clock (d) a wind-up toy
  2. 2.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a digital alarm clock (d) a spinning top
  3. 3.True or false: a microcontroller has no screen of its own. (a) False (b) True
  4. 4.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  5. 5.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  6. 6.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  7. 7.Which of these has no microcontroller inside? (a) a toy robot (b) a TV remote (c) a bicycle bell (d) a microwave oven
  8. 8.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the main chip (c) the pins (d) the USB port
  9. 9.True or false: a laptop has a built-in keyboard. (a) True (b) False
  10. 10.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  11. 11.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a hand pump (c) a spinning top (d) a bicycle bell
  12. 12.True or false: a microcontroller runs many apps at once. (a) False (b) True
  13. 13.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) uploaded over USB (d) typed on the chip
  14. 14.Which job is done by the power LED? (a) connect sensors and LEDs (b) runs the program (c) restarts the program (d) shows the board is on
  15. 15.Which job is done by the pins? (a) connect sensors and LEDs (b) runs the program (c) restarts the program (d) keeps the voltage steady
  16. 16.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the main chip (c) the reset button (d) the voltage regulator
  17. 17.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) a wall socket directly (c) USB or a 9 V battery (d) bare mains wires
  18. 18.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) flash memory (d) the resistor
  19. 19.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  20. 20.Which job is done by the USB port? (a) restarts the program (b) connect sensors and LEDs (c) runs the program (d) brings power and code
  21. 21.🤖 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
  22. 22.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  23. 23.Which job is done by the reset button? (a) restarts the program (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  24. 24.True or false: a laptop runs many apps at once. (a) True (b) False
  25. 25.Which of these usually has a microcontroller inside? (a) a TV remote (b) a plain wall switch (c) a candle (d) a hand pump
  26. 26.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  27. 27.True or false: a laptop uses very little power. (a) False (b) True
  28. 28.True or false: a laptop needs much more power. (a) False (b) True
  29. 29.Which job is done by the main chip? (a) runs the program (b) restarts the program (c) connect sensors and LEDs (d) keeps the voltage steady
  30. 30.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  31. 31.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  32. 32.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  33. 33.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the reset button (c) the voltage regulator (d) the pins
  34. 34.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  35. 35.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  36. 36.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) restarts the program (c) keeps the voltage steady (d) runs the program
  37. 37.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  38. 38.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  39. 39.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the power LED (c) the voltage regulator (d) the reset button
  40. 40.Which of these has no microcontroller inside? (a) a washing machine (b) a toy robot (c) a candle (d) a microwave oven

Answer key

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

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