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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 604 · 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 job is done by the power LED? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) shows the board is on
  2. 2.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  3. 3.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  4. 4.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the power LED (c) the reset button (d) the main chip
  5. 5.Which job is done by the voltage regulator? (a) brings power and code (b) connect sensors and LEDs (c) keeps the voltage steady (d) restarts the program
  6. 6.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  7. 7.Which job is done by the pins? (a) shows the board is on (b) connect sensors and LEDs (c) restarts the program (d) runs the program
  8. 8.Which of these has no microcontroller inside? (a) a microwave oven (b) a hand pump (c) a toy robot (d) a washing machine
  9. 9.🤖 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
  10. 10.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  11. 11.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) bare mains wires (d) a 230 V cable
  12. 12.Which of these usually has a microcontroller inside? (a) a candle (b) a microwave oven (c) a bicycle bell (d) a spinning top
  13. 13.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  14. 14.Which of these usually has a microcontroller inside? (a) a spinning top (b) a hand pump (c) a washing machine (d) a wind-up toy
  15. 15.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  16. 16.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  17. 17.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) drawn with a pen (c) typed on the chip (d) sent by sound
  18. 18.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  19. 19.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the USB port (c) the reset button (d) the voltage regulator
  20. 20.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  21. 21.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the USB port (c) the reset button (d) the pins
  22. 22.Which of these has no microcontroller inside? (a) a smart watch (b) a washing machine (c) a microwave oven (d) a plain wall switch
  23. 23.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  24. 24.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  25. 25.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  26. 26.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the voltage regulator (c) the reset button (d) the USB port
  27. 27.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  28. 28.Which of these has no microcontroller inside? (a) a TV remote (b) a bicycle bell (c) a microwave oven (d) a toy robot
  29. 29.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  30. 30.Which of these usually has a microcontroller inside? (a) a spinning top (b) a digital thermometer (c) a candle (d) a bicycle bell
  31. 31.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it deletes itself (d) it starts again
  32. 32.True or false: a laptop needs much more power. (a) False (b) True
  33. 33.True or false: a microcontroller runs one small program. (a) True (b) False
  34. 34.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  35. 35.Which job is done by the USB port? (a) keeps the voltage steady (b) brings power and code (c) connect sensors and LEDs (d) runs the program
  36. 36.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a toy robot (c) a hand pump (d) a plain wall switch
  37. 37.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  38. 38.True or false: a laptop has no screen of its own. (a) True (b) False
  39. 39.True or false: a laptop runs one small program. (a) False (b) True
  40. 40.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False

Answer key

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

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