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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 467 · 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 power LED? (a) restarts the program (b) keeps the voltage steady (c) shows the board is on (d) runs the program
  2. 2.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  3. 3.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  4. 4.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  5. 5.True or false: a microcontroller has no screen of its own. (a) False (b) True
  6. 6.Which of these has no microcontroller inside? (a) a hand pump (b) a smart watch (c) a microwave oven (d) a TV remote
  7. 7.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  8. 8.Which of these usually has a microcontroller inside? (a) a candle (b) a bicycle bell (c) a plain wall switch (d) a digital thermometer
  9. 9.True or false: a laptop runs one small program. (a) False (b) True
  10. 10.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  11. 11.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the pins (c) the power LED (d) the reset button
  12. 12.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  13. 13.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the main chip (c) the power LED (d) the pins
  14. 14.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  15. 15.Which of these usually has a microcontroller inside? (a) a hand pump (b) a bicycle bell (c) a plain wall switch (d) a smart watch
  16. 16.True or false: a laptop uses very little power. (a) True (b) False
  17. 17.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  18. 18.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a computer on one chip (d) a type of battery
  19. 19.True or false: a microcontroller uses very little power. (a) False (b) True
  20. 20.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the reset button (c) the USB port (d) the main chip
  21. 21.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the USB port (c) the reset button (d) the power LED
  22. 22.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a TV remote (c) a candle (d) a wind-up toy
  23. 23.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  24. 24.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  25. 25.🤖 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
  26. 26.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  27. 27.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a plain wall switch (d) a digital alarm clock
  28. 28.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) sent by sound (c) typed on the chip (d) drawn with a pen
  29. 29.Which of these has no microcontroller inside? (a) a toy robot (b) a bicycle bell (c) a washing machine (d) a smart watch
  30. 30.True or false: a microcontroller runs one small program. (a) False (b) True
  31. 31.True or false: a microcontroller needs much more power. (a) True (b) False
  32. 32.Which job is done by the main chip? (a) restarts the program (b) brings power and code (c) connect sensors and LEDs (d) runs the program
  33. 33.Which of these has no microcontroller inside? (a) a toy robot (b) a digital thermometer (c) a digital alarm clock (d) a spinning top
  34. 34.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  35. 35.🤖 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
  36. 36.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  37. 37.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  38. 38.Which job is done by the USB port? (a) restarts the program (b) brings power and code (c) connect sensors and LEDs (d) runs the program
  39. 39.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) the board breaks (c) it stops forever (d) it deletes itself
  40. 40.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True

Answer key

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

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