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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 453 · 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 part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the main chip (c) the reset button (d) the pins
  2. 2.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  3. 3.True or false: a microcontroller runs one small program. (a) False (b) True
  4. 4.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  5. 5.True or false: a candle has no microcontroller inside. (a) True (b) False
  6. 6.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  7. 7.True or false: a laptop has a built-in keyboard. (a) False (b) True
  8. 8.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  9. 9.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
  10. 10.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the power LED (c) the reset button (d) the USB port
  11. 11.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the USB cable (d) the resistor
  12. 12.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  13. 13.🤖 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
  14. 14.Which job is done by the main chip? (a) shows the board is on (b) brings power and code (c) runs the program (d) connect sensors and LEDs
  15. 15.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  16. 16.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  17. 17.True or false: a microcontroller uses very little power. (a) False (b) True
  18. 18.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  19. 19.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  20. 20.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  21. 21.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  22. 22.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  23. 23.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  24. 24.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the voltage regulator (c) the main chip (d) the power LED
  25. 25.🤖 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
  26. 26.Which of these has no microcontroller inside? (a) a wind-up toy (b) a digital thermometer (c) a TV remote (d) a smart watch
  27. 27.Which of these has no microcontroller inside? (a) a microwave oven (b) a bicycle bell (c) a toy robot (d) a digital thermometer
  28. 28.True or false: a laptop uses very little power. (a) True (b) False
  29. 29.Which of these usually has a microcontroller inside? (a) a TV remote (b) a plain wall switch (c) a bicycle bell (d) a candle
  30. 30.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  31. 31.True or false: a laptop runs one small program. (a) True (b) False
  32. 32.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a candle (c) a digital thermometer (d) a wind-up toy
  33. 33.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it starts again (d) it stops forever
  34. 34.True or false: a laptop has no screen of its own. (a) True (b) False
  35. 35.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  36. 36.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the reset button (c) the USB port (d) the pins
  37. 37.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  38. 38.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) drawn with a pen (d) sent by sound
  39. 39.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  40. 40.True or false: a spinning top has no microcontroller inside. (a) False (b) True

Answer key

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

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