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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 93 · 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 main chip (b) the USB port (c) the voltage regulator (d) the reset button
  2. 2.Which of these usually has a microcontroller inside? (a) a washing machine (b) a candle (c) a bicycle bell (d) a wind-up toy
  3. 3.True or false: a laptop runs many apps at once. (a) True (b) False
  4. 4.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  5. 5.🤖 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
  6. 6.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  7. 7.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a hand pump (c) a spinning top (d) a smart watch
  8. 8.True or false: a laptop uses very little power. (a) False (b) True
  9. 9.Which of these usually has a microcontroller inside? (a) a spinning top (b) a digital thermometer (c) a bicycle bell (d) a plain wall switch
  10. 10.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  11. 11.True or false: a laptop has no screen of its own. (a) False (b) True
  12. 12.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  13. 13.Which of these has no microcontroller inside? (a) a toy robot (b) a plain wall switch (c) a digital thermometer (d) a microwave oven
  14. 14.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  15. 15.True or false: a laptop has a built-in keyboard. (a) True (b) False
  16. 16.🤖 What is a microcontroller? (a) a computer on one chip (b) a type of battery (c) a big desktop computer (d) a kind of bulb
  17. 17.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the power LED (c) the pins (d) the USB port
  18. 18.Which job is done by the main chip? (a) keeps the voltage steady (b) restarts the program (c) shows the board is on (d) runs the program
  19. 19.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a digital alarm clock (d) a plain wall switch
  20. 20.Which job is done by the power LED? (a) restarts the program (b) keeps the voltage steady (c) brings power and code (d) shows the board is on
  21. 21.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  22. 22.Which of these has no microcontroller inside? (a) a candle (b) a TV remote (c) a toy robot (d) a microwave oven
  23. 23.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  24. 24.Which job is done by the voltage regulator? (a) restarts the program (b) shows the board is on (c) runs the program (d) keeps the voltage steady
  25. 25.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  26. 26.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  27. 27.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  28. 28.True or false: a microcontroller runs one small program. (a) True (b) False
  29. 29.🤖 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
  30. 30.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  31. 31.Which job is done by the reset button? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  32. 32.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) USB or a 9 V battery (d) a 230 V cable
  33. 33.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  34. 34.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  35. 35.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a spinning top (c) a hand pump (d) a TV remote
  36. 36.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  37. 37.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  38. 38.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  39. 39.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  40. 40.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the reset button (c) the power LED (d) the main chip

Answer key

  1. the USB port
  2. a washing machine
  3. True
  4. No
  5. flash memory
  6. False
  7. a smart watch
  8. False
  9. a digital thermometer
  10. laptop
  11. False
  12. microcontroller
  13. a plain wall switch
  14. True
  15. True
  16. a computer on one chip
  17. the pins
  18. runs the program
  19. a digital alarm clock
  20. shows the board is on
  21. False
  22. a candle
  23. False
  24. keeps the voltage steady
  25. False
  26. True
  27. False
  28. True
  29. it starts again
  30. Yes
  31. restarts the program
  32. USB or a 9 V battery
  33. laptop
  34. No
  35. a TV remote
  36. False
  37. No
  38. True
  39. Yes
  40. the main chip

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