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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 255 · 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.True or false: a microcontroller runs many apps at once. (a) False (b) True
  2. 2.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the USB port (c) the pins (d) the reset button
  3. 3.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  4. 4.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a type of battery (d) a computer on one chip
  5. 5.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  6. 6.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  7. 7.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  8. 8.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) typed on the chip (d) sent by sound
  9. 9.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the pins (c) the power LED (d) the main chip
  10. 10.True or false: a laptop runs one small program. (a) True (b) False
  11. 11.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  12. 12.True or false: a microcontroller uses very little power. (a) False (b) True
  13. 13.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) it deletes itself (d) the board breaks
  14. 14.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  15. 15.Which job is done by the reset button? (a) brings power and code (b) restarts the program (c) connect sensors and LEDs (d) runs the program
  16. 16.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a wall socket directly (c) bare mains wires (d) a 230 V cable
  17. 17.Which job is done by the USB port? (a) keeps the voltage steady (b) shows the board is on (c) restarts the program (d) brings power and code
  18. 18.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  19. 19.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  20. 20.True or false: a laptop needs much more power. (a) True (b) False
  21. 21.True or false: a laptop uses very little power. (a) False (b) True
  22. 22.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the reset button (c) the main chip (d) the USB port
  23. 23.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  24. 24.True or false: a microcontroller has no screen of its own. (a) False (b) True
  25. 25.Which job is done by the pins? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) restarts the program
  26. 26.Which of these usually has a microcontroller inside? (a) a candle (b) a washing machine (c) a bicycle bell (d) a hand pump
  27. 27.Which job is done by the power LED? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  28. 28.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  29. 29.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) flash memory (d) the resistor
  30. 30.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  31. 31.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  32. 32.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  33. 33.True or false: a laptop has no screen of its own. (a) False (b) True
  34. 34.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  35. 35.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a spinning top (c) a hand pump (d) a candle
  36. 36.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  37. 37.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  38. 38.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a toy robot (c) a hand pump (d) a wind-up toy
  39. 39.Which of these has no microcontroller inside? (a) a plain wall switch (b) a smart watch (c) a microwave oven (d) a TV remote
  40. 40.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller

Answer key

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

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