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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 203 · 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) flash memory (b) the power LED (c) the USB cable (d) the resistor
  2. 2.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  3. 3.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the voltage regulator (c) the pins (d) the reset button
  4. 4.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the voltage regulator (c) the power LED (d) the USB port
  5. 5.Which job is done by the USB port? (a) shows the board is on (b) brings power and code (c) restarts the program (d) keeps the voltage steady
  6. 6.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
  7. 7.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  8. 8.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  9. 9.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  10. 10.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  11. 11.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  12. 12.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a kind of bulb (d) a computer on one chip
  13. 13.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  14. 14.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the voltage regulator (c) the USB port (d) the reset button
  15. 15.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a TV remote (c) a spinning top (d) a candle
  16. 16.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  17. 17.True or false: a laptop runs many apps at once. (a) True (b) False
  18. 18.Which of these has no microcontroller inside? (a) a smart watch (b) a bicycle bell (c) a digital alarm clock (d) a toy robot
  19. 19.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the power LED (c) the pins (d) the main chip
  20. 20.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  21. 21.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a digital alarm clock (d) a spinning top
  22. 22.Which of these has no microcontroller inside? (a) a toy robot (b) a spinning top (c) a digital thermometer (d) a microwave oven
  23. 23.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  24. 24.True or false: a microcontroller runs many apps at once. (a) True (b) False
  25. 25.Which job is done by the power LED? (a) restarts the program (b) runs the program (c) shows the board is on (d) keeps the voltage steady
  26. 26.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  27. 27.Which job is done by the reset button? (a) shows the board is on (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  28. 28.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  29. 29.True or false: a microcontroller runs one small program. (a) True (b) False
  30. 30.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) typed on the chip (d) drawn with a pen
  31. 31.True or false: a microcontroller needs much more power. (a) False (b) True
  32. 32.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the USB port (c) the voltage regulator (d) the reset button
  33. 33.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  34. 34.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  35. 35.🧭 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
  36. 36.🤖 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
  37. 37.True or false: a laptop runs one small program. (a) False (b) True
  38. 38.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a hand pump (c) a plain wall switch (d) a microwave oven
  39. 39.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  40. 40.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No

Answer key

  1. flash memory
  2. True
  3. the reset button
  4. the power LED
  5. brings power and code
  6. USB or a 9 V battery
  7. True
  8. Yes
  9. False
  10. Yes
  11. Yes
  12. a computer on one chip
  13. True
  14. the pins
  15. a TV remote
  16. True
  17. True
  18. a bicycle bell
  19. the main chip
  20. False
  21. a digital alarm clock
  22. a spinning top
  23. No
  24. False
  25. shows the board is on
  26. laptop
  27. restarts the program
  28. True
  29. True
  30. uploaded over USB
  31. False
  32. the voltage regulator
  33. microcontroller
  34. True
  35. the USB port
  36. it starts again
  37. False
  38. a microwave oven
  39. False
  40. No

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