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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 53 · 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 bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  2. 2.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  3. 3.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a computer on one chip (d) a kind of bulb
  4. 4.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the main chip (c) the USB port (d) the power LED
  5. 5.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the resistor (d) the USB cable
  6. 6.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the main chip (c) the power LED (d) the reset button
  7. 7.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a spinning top (c) a wind-up toy (d) a digital thermometer
  8. 8.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  9. 9.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  10. 10.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  11. 11.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  12. 12.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  13. 13.Which job is done by the power LED? (a) keeps the voltage steady (b) restarts the program (c) shows the board is on (d) runs the program
  14. 14.True or false: a laptop has no screen of its own. (a) True (b) False
  15. 15.True or false: a laptop has a built-in keyboard. (a) False (b) True
  16. 16.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  17. 17.True or false: a candle has no microcontroller inside. (a) False (b) True
  18. 18.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it deletes itself (c) it starts again (d) the board breaks
  19. 19.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the pins (c) the voltage regulator (d) the main chip
  20. 20.True or false: a microcontroller needs much more power. (a) False (b) True
  21. 21.Which job is done by the USB port? (a) restarts the program (b) shows the board is on (c) keeps the voltage steady (d) brings power and code
  22. 22.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the USB port (c) the power LED (d) the main chip
  23. 23.Which of these has no microcontroller inside? (a) a toy robot (b) a smart watch (c) a digital thermometer (d) a plain wall switch
  24. 24.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  25. 25.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) USB or a 9 V battery (d) a wall socket directly
  26. 26.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  27. 27.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  28. 28.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  29. 29.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  30. 30.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a hand pump (d) a washing machine
  31. 31.True or false: a microcontroller uses very little power. (a) True (b) False
  32. 32.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  33. 33.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital alarm clock (c) a candle (d) a plain wall switch
  34. 34.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a bicycle bell (c) a toy robot (d) a washing machine
  35. 35.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  36. 36.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the power LED (c) the main chip (d) the voltage regulator
  37. 37.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) uploaded over USB (d) sent by sound
  38. 38.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  39. 39.Which job is done by the reset button? (a) brings power and code (b) runs the program (c) connect sensors and LEDs (d) restarts the program
  40. 40.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes

Answer key

  1. No
  2. False
  3. a computer on one chip
  4. the USB port
  5. flash memory
  6. the pins
  7. a digital thermometer
  8. Yes
  9. True
  10. No
  11. No
  12. Yes
  13. shows the board is on
  14. False
  15. True
  16. laptop
  17. True
  18. it starts again
  19. the reset button
  20. False
  21. brings power and code
  22. the power LED
  23. a plain wall switch
  24. Yes
  25. USB or a 9 V battery
  26. microcontroller
  27. True
  28. Yes
  29. False
  30. a hand pump
  31. True
  32. laptop
  33. a digital alarm clock
  34. a bicycle bell
  35. No
  36. the main chip
  37. uploaded over USB
  38. False
  39. restarts the program
  40. No

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