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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 235 · 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 is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) a wall socket directly (c) bare mains wires (d) USB or a 9 V battery
  2. 2.Which job is done by the voltage regulator? (a) brings power and code (b) runs the program (c) connect sensors and LEDs (d) keeps the voltage steady
  3. 3.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital alarm clock (c) a wind-up toy (d) a hand pump
  4. 4.Which of these has no microcontroller inside? (a) a candle (b) a smart watch (c) a toy robot (d) a TV remote
  5. 5.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  6. 6.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  7. 7.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  8. 8.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  9. 9.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  10. 10.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a kind of bulb (d) a computer on one chip
  11. 11.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  12. 12.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  13. 13.Which of these has no microcontroller inside? (a) a TV remote (b) a bicycle bell (c) a toy robot (d) a digital alarm clock
  14. 14.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the power LED (c) the reset button (d) the pins
  15. 15.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the reset button (c) the pins (d) the USB port
  16. 16.True or false: a laptop has a built-in keyboard. (a) False (b) True
  17. 17.True or false: a laptop runs one small program. (a) False (b) True
  18. 18.True or false: a microcontroller uses very little power. (a) False (b) True
  19. 19.Which job is done by the main chip? (a) shows the board is on (b) brings power and code (c) runs the program (d) connect sensors and LEDs
  20. 20.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  21. 21.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  22. 22.Which job is done by the power LED? (a) brings power and code (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  23. 23.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) sent by sound (d) uploaded over USB
  24. 24.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  25. 25.True or false: a laptop runs many apps at once. (a) True (b) False
  26. 26.Which of these usually has a microcontroller inside? (a) a hand pump (b) a toy robot (c) a candle (d) a wind-up toy
  27. 27.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  28. 28.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  29. 29.Which of these has no microcontroller inside? (a) a washing machine (b) a smart watch (c) a wind-up toy (d) a digital alarm clock
  30. 30.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  31. 31.🤖 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
  32. 32.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the USB port (c) the power LED (d) the main chip
  33. 33.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a washing machine (d) a wind-up toy
  34. 34.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  35. 35.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the voltage regulator (c) the power LED (d) the pins
  36. 36.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  37. 37.Which job is done by the pins? (a) keeps the voltage steady (b) connect sensors and LEDs (c) runs the program (d) restarts the program
  38. 38.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  39. 39.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  40. 40.True or false: a microcontroller needs much more power. (a) False (b) True

Answer key

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

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