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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 706 · 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 of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a digital alarm clock (d) a bicycle bell
  2. 2.🤖 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
  3. 3.Which of these has no microcontroller inside? (a) a smart watch (b) a hand pump (c) a washing machine (d) a toy robot
  4. 4.Which job is done by the reset button? (a) brings power and code (b) shows the board is on (c) restarts the program (d) connect sensors and LEDs
  5. 5.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  6. 6.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the voltage regulator (c) the USB port (d) the main chip
  7. 7.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  8. 8.Which job is done by the voltage regulator? (a) runs the program (b) restarts the program (c) keeps the voltage steady (d) shows the board is on
  9. 9.True or false: a laptop runs one small program. (a) False (b) True
  10. 10.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  11. 11.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the USB port (c) the reset button (d) the pins
  12. 12.Which of these has no microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a smart watch (d) a toy robot
  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.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  15. 15.Which job is done by the power LED? (a) brings power and code (b) shows the board is on (c) restarts the program (d) keeps the voltage steady
  16. 16.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  17. 17.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  18. 18.True or false: a microcontroller runs one small program. (a) True (b) False
  19. 19.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the USB port (c) the pins (d) the voltage regulator
  20. 20.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  21. 21.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  22. 22.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the main chip (c) the USB port (d) the reset button
  23. 23.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  24. 24.Which of these has no microcontroller inside? (a) a digital thermometer (b) a bicycle bell (c) a microwave oven (d) a digital alarm clock
  25. 25.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a hand pump (c) a wind-up toy (d) a digital thermometer
  26. 26.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  27. 27.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  28. 28.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  29. 29.Which of these usually has a microcontroller inside? (a) a spinning top (b) a smart watch (c) a plain wall switch (d) a bicycle bell
  30. 30.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  31. 31.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  32. 32.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  33. 33.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  34. 34.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  35. 35.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
  36. 36.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it starts again (d) it deletes itself
  37. 37.True or false: a microcontroller has no screen of its own. (a) False (b) True
  38. 38.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) a wall socket directly (d) USB or a 9 V battery
  39. 39.Which job is done by the pins? (a) keeps the voltage steady (b) shows the board is on (c) connect sensors and LEDs (d) restarts the program
  40. 40.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True

Answer key

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

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