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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 224 · 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.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) the resistor (d) flash memory
  2. 2.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  3. 3.Which of these has no microcontroller inside? (a) a bicycle bell (b) a toy robot (c) a digital thermometer (d) a microwave oven
  4. 4.True or false: a laptop uses very little power. (a) True (b) False
  5. 5.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the power LED (c) the voltage regulator (d) the pins
  6. 6.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the pins (c) the main chip (d) the power LED
  7. 7.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  8. 8.True or false: a microcontroller has no screen of its own. (a) True (b) False
  9. 9.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  10. 10.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  11. 11.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the reset button (c) the USB port (d) the main chip
  12. 12.True or false: a laptop runs many apps at once. (a) False (b) True
  13. 13.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  14. 14.Which job is done by the power LED? (a) shows the board is on (b) restarts the program (c) brings power and code (d) runs the program
  15. 15.Which of these has no microcontroller inside? (a) a toy robot (b) a smart watch (c) a digital alarm clock (d) a candle
  16. 16.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  17. 17.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  18. 18.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a hand pump (c) a microwave oven (d) a wind-up toy
  19. 19.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the power LED (c) the main chip (d) the reset button
  20. 20.Which job is done by the main chip? (a) connect sensors and LEDs (b) runs the program (c) restarts the program (d) brings power and code
  21. 21.Which job is done by the reset button? (a) keeps the voltage steady (b) runs the program (c) restarts the program (d) connect sensors and LEDs
  22. 22.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  23. 23.True or false: a candle has no microcontroller inside. (a) False (b) True
  24. 24.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the pins (c) the power LED (d) the reset button
  25. 25.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a type of battery (d) a computer on one chip
  26. 26.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  27. 27.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  28. 28.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  29. 29.Which job is done by the pins? (a) connect sensors and LEDs (b) shows the board is on (c) brings power and code (d) restarts the program
  30. 30.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  31. 31.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  32. 32.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  33. 33.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  34. 34.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) the board breaks (d) it stops forever
  35. 35.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  36. 36.🤖 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
  37. 37.Which job is done by the voltage regulator? (a) restarts the program (b) keeps the voltage steady (c) brings power and code (d) connect sensors and LEDs
  38. 38.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  39. 39.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  40. 40.Which of these has no microcontroller inside? (a) a wind-up toy (b) a digital thermometer (c) a microwave oven (d) a digital alarm clock

Answer key

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

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