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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 448 · 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 brings power and code? (a) the reset button (b) the voltage regulator (c) the pins (d) the USB port
  2. 2.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  3. 3.Which job is done by the USB port? (a) connect sensors and LEDs (b) restarts the program (c) brings power and code (d) shows the board is on
  4. 4.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  5. 5.Which of these has no microcontroller inside? (a) a smart watch (b) a microwave oven (c) a TV remote (d) a candle
  6. 6.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  7. 7.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a hand pump (c) a microwave oven (d) a TV remote
  8. 8.True or false: a laptop uses very little power. (a) False (b) True
  9. 9.True or false: a laptop runs one small program. (a) True (b) False
  10. 10.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  11. 11.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  12. 12.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) the board breaks (d) it starts again
  13. 13.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a digital alarm clock (d) a hand pump
  14. 14.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  15. 15.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the main chip (c) the reset button (d) the USB port
  16. 16.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the voltage regulator (c) the pins (d) the power LED
  17. 17.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  18. 18.Which job is done by the power LED? (a) shows the board is on (b) runs the program (c) restarts the program (d) connect sensors and LEDs
  19. 19.🤖 What is a microcontroller? (a) a kind of bulb (b) a type of battery (c) a computer on one chip (d) a big desktop computer
  20. 20.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a bicycle bell (d) a microwave oven
  21. 21.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the power LED (d) the resistor
  22. 22.True or false: a microcontroller has no screen of its own. (a) True (b) False
  23. 23.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  24. 24.Which job is done by the pins? (a) shows the board is on (b) runs the program (c) connect sensors and LEDs (d) keeps the voltage steady
  25. 25.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the reset button (c) the USB port (d) the main chip
  26. 26.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  27. 27.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the power LED (c) the reset button (d) the pins
  28. 28.True or false: a microcontroller runs many apps at once. (a) False (b) True
  29. 29.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  30. 30.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  31. 31.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  32. 32.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) a wall socket directly (d) bare mains wires
  33. 33.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  34. 34.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  35. 35.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) uploaded over USB (d) drawn with a pen
  36. 36.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  37. 37.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  38. 38.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a hand pump (c) a smart watch (d) a spinning top
  39. 39.Which of these usually has a microcontroller inside? (a) a hand pump (b) a microwave oven (c) a candle (d) a bicycle bell
  40. 40.Which of these has no microcontroller inside? (a) a digital thermometer (b) a wind-up toy (c) a microwave oven (d) a smart watch

Answer key

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

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