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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 591 · 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 restarts the program? (a) the voltage regulator (b) the reset button (c) the USB port (d) the pins
  2. 2.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  3. 3.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  4. 4.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  5. 5.Which of these usually has a microcontroller inside? (a) a candle (b) a TV remote (c) a spinning top (d) a plain wall switch
  6. 6.Which of these has no microcontroller inside? (a) a toy robot (b) a microwave oven (c) a hand pump (d) a digital thermometer
  7. 7.True or false: a microcontroller runs one small program. (a) False (b) True
  8. 8.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the USB port (c) the main chip (d) the voltage regulator
  9. 9.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  11. 11.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) a wall socket directly (c) bare mains wires (d) USB or a 9 V battery
  12. 12.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the pins (c) the power LED (d) the USB port
  13. 13.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  14. 14.Which job is done by the USB port? (a) restarts the program (b) keeps the voltage steady (c) brings power and code (d) runs the program
  15. 15.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the USB cable (c) the power LED (d) the resistor
  16. 16.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  17. 17.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it deletes itself (d) it starts again
  18. 18.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  19. 19.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  20. 20.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  21. 21.🤖 What is a microcontroller? (a) a big desktop computer (b) a computer on one chip (c) a kind of bulb (d) a type of battery
  22. 22.Which job is done by the main chip? (a) brings power and code (b) restarts the program (c) runs the program (d) keeps the voltage steady
  23. 23.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a candle (d) a washing machine
  24. 24.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  25. 25.True or false: a laptop runs many apps at once. (a) True (b) False
  26. 26.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a toy robot (d) a candle
  27. 27.True or false: a laptop needs much more power. (a) True (b) False
  28. 28.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  29. 29.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the main chip (c) the USB port (d) the power LED
  30. 30.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  31. 31.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  32. 32.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  33. 33.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital alarm clock (c) a washing machine (d) a wind-up toy
  34. 34.Which job is done by the pins? (a) keeps the voltage steady (b) connect sensors and LEDs (c) runs the program (d) restarts the program
  35. 35.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  36. 36.True or false: a microcontroller runs many apps at once. (a) True (b) False
  37. 37.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  38. 38.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  39. 39.Which of these usually has a microcontroller inside? (a) a candle (b) a bicycle bell (c) a smart watch (d) a plain wall switch
  40. 40.Which job is done by the power LED? (a) shows the board is on (b) connect sensors and LEDs (c) restarts the program (d) keeps the voltage steady

Answer key

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

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