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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 592 · 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 job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) connect sensors and LEDs (d) brings power and code
  2. 2.🤖 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
  3. 3.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  4. 4.True or false: a microcontroller runs many apps at once. (a) True (b) False
  5. 5.Which job is done by the USB port? (a) connect sensors and LEDs (b) brings power and code (c) runs the program (d) restarts the program
  6. 6.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  7. 7.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  8. 8.True or false: a laptop runs one small program. (a) False (b) True
  9. 9.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) uploaded over USB (d) sent by sound
  10. 10.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a toy robot (c) a candle (d) a wind-up toy
  11. 11.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a wall socket directly (d) a 230 V cable
  12. 12.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  13. 13.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  14. 14.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  15. 15.Which of these has no microcontroller inside? (a) a washing machine (b) a digital thermometer (c) a candle (d) a microwave oven
  16. 16.True or false: a laptop uses very little power. (a) False (b) True
  17. 17.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  18. 18.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a wind-up toy (c) a microwave oven (d) a bicycle bell
  19. 19.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  20. 20.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  21. 21.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
  22. 22.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  23. 23.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  24. 24.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the reset button (c) the power LED (d) the main chip
  25. 25.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the reset button (c) the USB port (d) the pins
  26. 26.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  27. 27.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the reset button (c) the power LED (d) the USB port
  28. 28.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) it starts again (d) the board breaks
  29. 29.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  30. 30.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  31. 31.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  32. 32.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the voltage regulator (c) the pins (d) the reset button
  33. 33.Which of these has no microcontroller inside? (a) a digital thermometer (b) a spinning top (c) a washing machine (d) a digital alarm clock
  34. 34.Which of these has no microcontroller inside? (a) a bicycle bell (b) a smart watch (c) a digital alarm clock (d) a microwave oven
  35. 35.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  36. 36.True or false: a microcontroller uses very little power. (a) True (b) False
  37. 37.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  38. 38.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a digital alarm clock (d) a plain wall switch
  39. 39.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  40. 40.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller

Answer key

  1. runs the program
  2. flash memory
  3. True
  4. False
  5. brings power and code
  6. False
  7. False
  8. False
  9. uploaded over USB
  10. a toy robot
  11. USB or a 9 V battery
  12. No
  13. True
  14. laptop
  15. a candle
  16. False
  17. False
  18. a microwave oven
  19. Yes
  20. Yes
  21. keeps the voltage steady
  22. microcontroller
  23. No
  24. the reset button
  25. the pins
  26. False
  27. the power LED
  28. it starts again
  29. False
  30. True
  31. Yes
  32. the voltage regulator
  33. a spinning top
  34. a bicycle bell
  35. Yes
  36. True
  37. True
  38. a plain wall switch
  39. Yes
  40. microcontroller

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