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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 536 · 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.🤖 What is a microcontroller? (a) a computer on one chip (b) a big desktop computer (c) a kind of bulb (d) a type of battery
  2. 2.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  3. 3.True or false: a laptop needs much more power. (a) False (b) True
  4. 4.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  5. 5.True or false: a microcontroller runs many apps at once. (a) True (b) False
  6. 6.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  7. 7.🤖 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
  8. 8.Which of these has no microcontroller inside? (a) a microwave oven (b) a bicycle bell (c) a washing machine (d) a digital thermometer
  9. 9.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  10. 10.True or false: a microcontroller runs one small program. (a) True (b) False
  11. 11.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the USB port (c) the power LED (d) the pins
  12. 12.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  13. 13.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  14. 14.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the reset button (c) the pins (d) the main chip
  15. 15.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  16. 16.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  17. 17.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  18. 18.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a wall socket directly (c) bare mains wires (d) a 230 V cable
  19. 19.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a plain wall switch (d) a TV remote
  20. 20.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  21. 21.Which of these usually has a microcontroller inside? (a) a spinning top (b) a washing machine (c) a candle (d) a hand pump
  22. 22.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  23. 23.Which job is done by the reset button? (a) keeps the voltage steady (b) brings power and code (c) restarts the program (d) runs the program
  24. 24.🤖 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
  25. 25.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the USB port (c) the voltage regulator (d) the main chip
  26. 26.True or false: a microcontroller uses very little power. (a) False (b) True
  27. 27.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  28. 28.Which job is done by the USB port? (a) brings power and code (b) runs the program (c) keeps the voltage steady (d) shows the board is on
  29. 29.Which of these has no microcontroller inside? (a) a candle (b) a TV remote (c) a microwave oven (d) a smart watch
  30. 30.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  31. 31.True or false: a microcontroller needs much more power. (a) False (b) True
  32. 32.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  33. 33.🧭 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
  34. 34.Which job is done by the main chip? (a) restarts the program (b) runs the program (c) brings power and code (d) connect sensors and LEDs
  35. 35.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) sent by sound (d) drawn with a pen
  36. 36.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the USB port (c) the power LED (d) the reset button
  37. 37.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  38. 38.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  39. 39.Which job is done by the voltage regulator? (a) runs the program (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
  40. 40.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the USB port (c) the reset button (d) the power LED

Answer key

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

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