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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 466 · 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 part of a microcontroller board runs the program? (a) the pins (b) the USB port (c) the main chip (d) the voltage regulator
  2. 2.Which job is done by the reset button? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) runs the program
  3. 3.True or false: a laptop has no screen of its own. (a) True (b) False
  4. 4.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  5. 5.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) the board breaks (d) it deletes itself
  6. 6.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  7. 7.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  8. 8.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  9. 9.Which of these has no microcontroller inside? (a) a digital thermometer (b) a TV remote (c) a toy robot (d) a wind-up toy
  10. 10.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  11. 11.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  12. 12.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  13. 13.🤖 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
  14. 14.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  15. 15.True or false: a laptop needs much more power. (a) True (b) False
  16. 16.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  17. 17.🤖 What is a microcontroller? (a) a big desktop computer (b) a computer on one chip (c) a type of battery (d) a kind of bulb
  18. 18.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the USB cable (d) the resistor
  19. 19.True or false: a laptop has a built-in keyboard. (a) True (b) False
  20. 20.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a hand pump (d) a digital thermometer
  21. 21.Which job is done by the pins? (a) shows the board is on (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  22. 22.Which job is done by the USB port? (a) keeps the voltage steady (b) runs the program (c) connect sensors and LEDs (d) brings power and code
  23. 23.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a toy robot (c) a bicycle bell (d) a candle
  24. 24.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  25. 25.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the main chip (c) the USB port (d) the power LED
  26. 26.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  27. 27.True or false: a microcontroller runs one small program. (a) True (b) False
  28. 28.Which of these has no microcontroller inside? (a) a toy robot (b) a microwave oven (c) a bicycle bell (d) a TV remote
  29. 29.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the power LED (c) the voltage regulator (d) the main chip
  30. 30.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  31. 31.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  32. 32.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  33. 33.Which job is done by the main chip? (a) runs the program (b) restarts the program (c) brings power and code (d) shows the board is on
  34. 34.🤖 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
  35. 35.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  36. 36.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  37. 37.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  38. 38.True or false: a laptop uses very little power. (a) False (b) True
  39. 39.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  40. 40.True or false: a TV remote has no microcontroller inside. (a) True (b) False

Answer key

  1. the main chip
  2. restarts the program
  3. False
  4. Yes
  5. it starts again
  6. True
  7. True
  8. False
  9. a wind-up toy
  10. Yes
  11. microcontroller
  12. False
  13. uploaded over USB
  14. laptop
  15. True
  16. No
  17. a computer on one chip
  18. flash memory
  19. True
  20. a digital thermometer
  21. connect sensors and LEDs
  22. brings power and code
  23. a toy robot
  24. No
  25. the USB port
  26. microcontroller
  27. True
  28. a bicycle bell
  29. the pins
  30. No
  31. False
  32. Yes
  33. runs the program
  34. USB or a 9 V battery
  35. True
  36. microcontroller
  37. laptop
  38. False
  39. False
  40. False

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