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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 388 · 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.🤖 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
  2. 2.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the power LED (c) the USB port (d) the pins
  3. 3.True or false: a microcontroller runs many apps at once. (a) False (b) True
  4. 4.Which job is done by the pins? (a) connect sensors and LEDs (b) shows the board is on (c) keeps the voltage steady (d) restarts the program
  5. 5.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  6. 6.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the USB port (c) the voltage regulator (d) the pins
  7. 7.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  8. 8.True or false: a laptop runs many apps at once. (a) True (b) False
  9. 9.Which of these usually has a microcontroller inside? (a) a spinning top (b) a TV remote (c) a hand pump (d) a wind-up toy
  10. 10.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  11. 11.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a plain wall switch (d) a digital alarm clock
  12. 12.True or false: a microcontroller needs much more power. (a) True (b) False
  13. 13.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  14. 14.🤖 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
  15. 15.Which job is done by the main chip? (a) shows the board is on (b) runs the program (c) keeps the voltage steady (d) connect sensors and LEDs
  16. 16.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  17. 17.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  18. 18.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  19. 19.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a candle (d) a digital alarm clock
  20. 20.Which of these usually has a microcontroller inside? (a) a toy robot (b) a wind-up toy (c) a spinning top (d) a hand pump
  21. 21.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a bicycle bell (d) a plain wall switch
  22. 22.True or false: a laptop runs one small program. (a) True (b) False
  23. 23.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  24. 24.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  25. 25.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  26. 26.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) brings power and code
  27. 27.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  28. 28.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) typed on the chip (d) uploaded over USB
  29. 29.True or false: a microcontroller uses very little power. (a) False (b) True
  30. 30.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the pins (c) the main chip (d) the USB port
  31. 31.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the voltage regulator (c) the main chip (d) the reset button
  32. 32.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  33. 33.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) USB or a 9 V battery (d) bare mains wires
  34. 34.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) flash memory (d) the power LED
  35. 35.True or false: a laptop uses very little power. (a) True (b) False
  36. 36.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the power LED (d) the pins
  37. 37.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  38. 38.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  39. 39.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital alarm clock (c) a candle (d) a wind-up toy
  40. 40.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller

Answer key

  1. it starts again
  2. the USB port
  3. False
  4. connect sensors and LEDs
  5. laptop
  6. the pins
  7. microcontroller
  8. True
  9. a TV remote
  10. True
  11. a plain wall switch
  12. False
  13. True
  14. a computer on one chip
  15. runs the program
  16. Yes
  17. True
  18. microcontroller
  19. a candle
  20. a toy robot
  21. a microwave oven
  22. False
  23. Yes
  24. laptop
  25. Yes
  26. keeps the voltage steady
  27. Yes
  28. uploaded over USB
  29. True
  30. the main chip
  31. the reset button
  32. False
  33. USB or a 9 V battery
  34. flash memory
  35. False
  36. the voltage regulator
  37. True
  38. True
  39. a digital alarm clock
  40. laptop

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