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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 485 · 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) it starts again (d) the board breaks
  2. 2.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  3. 3.🤖 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
  4. 4.Which job is done by the voltage regulator? (a) restarts the program (b) keeps the voltage steady (c) runs the program (d) connect sensors and LEDs
  5. 5.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  6. 6.True or false: a laptop runs many apps at once. (a) False (b) True
  7. 7.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  8. 8.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  9. 9.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  10. 10.Which job is done by the main chip? (a) connect sensors and LEDs (b) runs the program (c) restarts the program (d) keeps the voltage steady
  11. 11.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the power LED (c) the voltage regulator (d) the main chip
  12. 12.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  13. 13.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) flash memory (d) the USB cable
  14. 14.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  15. 15.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a candle (d) a TV remote
  16. 16.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  17. 17.Which of these has no microcontroller inside? (a) a plain wall switch (b) a TV remote (c) a microwave oven (d) a digital alarm clock
  18. 18.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) drawn with a pen (d) typed on the chip
  19. 19.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the reset button (c) the main chip (d) the power LED
  20. 20.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a digital thermometer (d) a candle
  21. 21.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  22. 22.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  23. 23.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  24. 24.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  25. 25.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  26. 26.🤖 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
  27. 27.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  28. 28.Which job is done by the pins? (a) runs the program (b) keeps the voltage steady (c) shows the board is on (d) connect sensors and LEDs
  29. 29.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the voltage regulator (c) the main chip (d) the reset button
  30. 30.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  31. 31.True or false: a microcontroller uses very little power. (a) True (b) False
  32. 32.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a plain wall switch (d) a washing machine
  33. 33.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  34. 34.True or false: a laptop runs one small program. (a) True (b) False
  35. 35.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the voltage regulator (c) the reset button (d) the power LED
  36. 36.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a toy robot (d) a hand pump
  37. 37.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  38. 38.True or false: a microcontroller runs one small program. (a) False (b) True
  39. 39.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  40. 40.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a hand pump (c) a smart watch (d) a candle

Answer key

  1. it starts again
  2. True
  3. a computer on one chip
  4. keeps the voltage steady
  5. Yes
  6. True
  7. No
  8. Yes
  9. True
  10. runs the program
  11. the main chip
  12. No
  13. flash memory
  14. No
  15. a TV remote
  16. laptop
  17. a plain wall switch
  18. uploaded over USB
  19. the voltage regulator
  20. a digital thermometer
  21. False
  22. laptop
  23. microcontroller
  24. False
  25. True
  26. USB or a 9 V battery
  27. Yes
  28. connect sensors and LEDs
  29. the reset button
  30. False
  31. True
  32. a washing machine
  33. True
  34. False
  35. the power LED
  36. a toy robot
  37. No
  38. True
  39. False
  40. a smart watch

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