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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 539 · 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) the board breaks (b) it starts again (c) it stops forever (d) it deletes itself
  2. 2.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  3. 3.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  4. 4.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the voltage regulator (c) the reset button (d) the USB port
  5. 5.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the power LED (c) the USB port (d) the reset button
  6. 6.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  7. 7.True or false: a microcontroller uses very little power. (a) True (b) False
  8. 8.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  9. 9.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a spinning top (d) a digital thermometer
  10. 10.Which job is done by the USB port? (a) connect sensors and LEDs (b) brings power and code (c) shows the board is on (d) runs the program
  11. 11.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) bare mains wires (d) a wall socket directly
  12. 12.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the main chip (c) the voltage regulator (d) the pins
  13. 13.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  14. 14.True or false: a laptop runs one small program. (a) True (b) False
  15. 15.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  16. 16.Which job is done by the voltage regulator? (a) shows the board is on (b) brings power and code (c) restarts the program (d) keeps the voltage steady
  17. 17.Which of these has no microcontroller inside? (a) a smart watch (b) a digital thermometer (c) a plain wall switch (d) a microwave oven
  18. 18.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  19. 19.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  20. 20.Which job is done by the reset button? (a) restarts the program (b) brings power and code (c) shows the board is on (d) keeps the voltage steady
  21. 21.🤖 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
  22. 22.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  23. 23.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  24. 24.🤖 What is a microcontroller? (a) a computer on one chip (b) a big desktop computer (c) a kind of bulb (d) a type of battery
  25. 25.Which job is done by the power LED? (a) shows the board is on (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  26. 26.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  27. 27.True or false: a candle has no microcontroller inside. (a) True (b) False
  28. 28.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  29. 29.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  30. 30.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the reset button (c) the power LED (d) the pins
  31. 31.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  32. 32.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  33. 33.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  34. 34.True or false: a laptop runs many apps at once. (a) True (b) False
  35. 35.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  36. 36.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  37. 37.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  38. 38.Which of these has no microcontroller inside? (a) a washing machine (b) a digital thermometer (c) a bicycle bell (d) a digital alarm clock
  39. 39.Which job is done by the main chip? (a) connect sensors and LEDs (b) brings power and code (c) shows the board is on (d) runs the program
  40. 40.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop

Answer key

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

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