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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 249 · 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 has a built-in keyboard. (a) True (b) False
  2. 2.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the voltage regulator (c) the USB port (d) the reset button
  3. 3.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a toy robot (c) a hand pump (d) a spinning top
  4. 4.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a spinning top (c) a candle (d) a wind-up toy
  5. 5.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the main chip (c) the power LED (d) the reset button
  6. 6.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  7. 7.🤖 What is a microcontroller? (a) a computer on one chip (b) a type of battery (c) a big desktop computer (d) a kind of bulb
  8. 8.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it starts again (d) it deletes itself
  9. 9.True or false: a microcontroller needs much more power. (a) True (b) False
  10. 10.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a digital thermometer (d) a hand pump
  11. 11.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the voltage regulator (c) the USB port (d) the power LED
  12. 12.Which job is done by the power LED? (a) keeps the voltage steady (b) restarts the program (c) shows the board is on (d) brings power and code
  13. 13.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  14. 14.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  15. 15.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the reset button (d) the power LED
  16. 16.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  17. 17.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a microwave oven (c) a washing machine (d) a spinning top
  18. 18.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  19. 19.🤖 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
  20. 20.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a washing machine (c) a spinning top (d) a candle
  21. 21.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) sent by sound (d) drawn with a pen
  22. 22.Which of these has no microcontroller inside? (a) a plain wall switch (b) a digital thermometer (c) a washing machine (d) a microwave oven
  23. 23.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  24. 24.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the reset button (c) the voltage regulator (d) the power LED
  25. 25.True or false: a microcontroller has no screen of its own. (a) True (b) False
  26. 26.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  27. 27.True or false: a microcontroller uses very little power. (a) True (b) False
  28. 28.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  29. 29.Which of these has no microcontroller inside? (a) a washing machine (b) a digital thermometer (c) a candle (d) a toy robot
  30. 30.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  31. 31.Which job is done by the pins? (a) brings power and code (b) runs the program (c) keeps the voltage steady (d) connect sensors and LEDs
  32. 32.True or false: a laptop uses very little power. (a) False (b) True
  33. 33.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  34. 34.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  35. 35.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  36. 36.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  37. 37.True or false: a laptop needs much more power. (a) True (b) False
  38. 38.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  39. 39.Which job is done by the voltage regulator? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) shows the board is on
  40. 40.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a wind-up toy (d) a smart watch

Answer key

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

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