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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 402 · 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 has no microcontroller inside? (a) a toy robot (b) a washing machine (c) a candle (d) a TV remote
  2. 2.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the USB port (c) the pins (d) the main chip
  3. 3.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) uploaded over USB (d) sent by sound
  4. 4.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  5. 5.True or false: a microcontroller has no screen of its own. (a) False (b) True
  6. 6.Which job is done by the reset button? (a) shows the board is on (b) keeps the voltage steady (c) connect sensors and LEDs (d) restarts the program
  7. 7.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  8. 8.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the USB port (c) the main chip (d) the voltage regulator
  9. 9.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  10. 10.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  11. 11.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  12. 12.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) the USB cable (d) flash memory
  13. 13.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  14. 14.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) a wall socket directly (d) bare mains wires
  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 washing machine
  16. 16.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  17. 17.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the main chip (c) the voltage regulator (d) the reset button
  18. 18.🤖 What is a microcontroller? (a) a computer on one chip (b) a kind of bulb (c) a type of battery (d) a big desktop computer
  19. 19.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  20. 20.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
  21. 21.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the reset button (c) the USB port (d) the power LED
  22. 22.True or false: a laptop runs one small program. (a) True (b) False
  23. 23.True or false: a laptop has no screen of its own. (a) False (b) True
  24. 24.Which job is done by the pins? (a) shows the board is on (b) connect sensors and LEDs (c) runs the program (d) brings power and code
  25. 25.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a bicycle bell (d) a digital alarm clock
  26. 26.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the USB port (c) the reset button (d) the power LED
  27. 27.Which of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a bicycle bell (d) a smart watch
  28. 28.True or false: a laptop has a built-in keyboard. (a) False (b) True
  29. 29.Which of these has no microcontroller inside? (a) a microwave oven (b) a washing machine (c) a wind-up toy (d) a toy robot
  30. 30.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  31. 31.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  32. 32.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it stops forever (d) it deletes itself
  33. 33.True or false: a laptop runs many apps at once. (a) False (b) True
  34. 34.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  35. 35.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  36. 36.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  37. 37.Which job is done by the voltage regulator? (a) runs the program (b) connect sensors and LEDs (c) brings power and code (d) keeps the voltage steady
  38. 38.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  39. 39.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  40. 40.Which job is done by the USB port? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) shows the board is on

Answer key

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

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