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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 222 · 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 digital thermometer (b) a wind-up toy (c) a microwave oven (d) a washing machine
  2. 2.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it deletes itself (c) the board breaks (d) it starts again
  3. 3.True or false: a laptop uses very little power. (a) False (b) True
  4. 4.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  5. 5.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  6. 6.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) sent by sound (d) typed on the chip
  7. 7.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the main chip (c) the USB port (d) the reset button
  8. 8.True or false: a laptop has a built-in keyboard. (a) True (b) False
  9. 9.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  10. 10.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  11. 11.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the pins (c) the reset button (d) the power LED
  12. 12.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  13. 13.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  14. 14.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) a 230 V cable (d) USB or a 9 V battery
  15. 15.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  16. 16.True or false: a laptop runs many apps at once. (a) False (b) True
  17. 17.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  18. 18.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a digital alarm clock (d) a candle
  19. 19.🤖 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
  20. 20.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  21. 21.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  22. 22.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the reset button (c) the pins (d) the USB port
  23. 23.Which of these has no microcontroller inside? (a) a spinning top (b) a TV remote (c) a digital thermometer (d) a toy robot
  24. 24.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the pins (c) the voltage regulator (d) the reset button
  25. 25.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  26. 26.Which job is done by the power LED? (a) runs the program (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  27. 27.Which of these has no microcontroller inside? (a) a toy robot (b) a hand pump (c) a digital thermometer (d) a smart watch
  28. 28.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  29. 29.Which of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a candle (d) a digital thermometer
  30. 30.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  31. 31.Which job is done by the main chip? (a) brings power and code (b) shows the board is on (c) connect sensors and LEDs (d) runs the program
  32. 32.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  33. 33.Which job is done by the pins? (a) runs the program (b) brings power and code (c) connect sensors and LEDs (d) keeps the voltage steady
  34. 34.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  35. 35.Which of these has no microcontroller inside? (a) a TV remote (b) a bicycle bell (c) a microwave oven (d) a washing machine
  36. 36.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a TV remote (d) a wind-up toy
  37. 37.True or false: a laptop runs one small program. (a) True (b) False
  38. 38.True or false: a microcontroller has no screen of its own. (a) False (b) True
  39. 39.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  40. 40.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No

Answer key

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

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