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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 349 · 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.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it starts again (d) it deletes itself
  2. 2.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  3. 3.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  4. 4.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the reset button (c) the pins (d) the power LED
  5. 5.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  6. 6.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the reset button (c) the pins (d) the power LED
  7. 7.Which of these has no microcontroller inside? (a) a candle (b) a digital thermometer (c) a smart watch (d) a digital alarm clock
  8. 8.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a hand pump (d) a digital alarm clock
  9. 9.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the voltage regulator (c) the main chip (d) the reset button
  10. 10.🤖 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
  11. 11.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a candle (c) a plain wall switch (d) a wind-up toy
  12. 12.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  13. 13.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) USB or a 9 V battery (d) a wall socket directly
  14. 14.Which job is done by the voltage regulator? (a) restarts the program (b) connect sensors and LEDs (c) runs the program (d) keeps the voltage steady
  15. 15.True or false: a microcontroller needs much more power. (a) False (b) True
  16. 16.Which job is done by the pins? (a) shows the board is on (b) keeps the voltage steady (c) restarts the program (d) connect sensors and LEDs
  17. 17.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  18. 18.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a hand pump (d) a digital thermometer
  19. 19.Which job is done by the reset button? (a) runs the program (b) shows the board is on (c) brings power and code (d) restarts the program
  20. 20.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  21. 21.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the pins (c) the main chip (d) the reset button
  22. 22.Which of these has no microcontroller inside? (a) a digital thermometer (b) a wind-up toy (c) a microwave oven (d) a washing machine
  23. 23.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  24. 24.True or false: a laptop runs one small program. (a) True (b) False
  25. 25.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a hand pump (d) a TV remote
  26. 26.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  27. 27.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  28. 28.True or false: a microcontroller runs one small program. (a) True (b) False
  29. 29.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  30. 30.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  31. 31.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  32. 32.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  33. 33.🤖 What is a microcontroller? (a) a kind of bulb (b) a type of battery (c) a computer on one chip (d) a big desktop computer
  34. 34.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  35. 35.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  36. 36.Which of these usually has a microcontroller inside? (a) a toy robot (b) a wind-up toy (c) a bicycle bell (d) a plain wall switch
  37. 37.True or false: a microcontroller uses very little power. (a) False (b) True
  38. 38.True or false: a laptop has a built-in keyboard. (a) True (b) False
  39. 39.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a bicycle bell (d) a digital alarm clock
  40. 40.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop

Answer key

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

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