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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 570 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  2. 2.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  3. 3.Which of these usually has a microcontroller inside? (a) a TV remote (b) a candle (c) a spinning top (d) a wind-up toy
  4. 4.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  5. 5.🤖 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
  6. 6.True or false: a laptop uses very little power. (a) False (b) True
  7. 7.Which job is done by the USB port? (a) shows the board is on (b) brings power and code (c) connect sensors and LEDs (d) runs the program
  8. 8.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) the USB cable (d) flash memory
  9. 9.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a smart watch (c) a digital thermometer (d) a hand pump
  10. 10.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) the board breaks (d) it stops forever
  11. 11.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  12. 12.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the USB port (c) the pins (d) the main chip
  13. 13.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  14. 14.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the pins (c) the USB port (d) the reset button
  15. 15.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  16. 16.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  17. 17.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  18. 18.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  19. 19.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the power LED (c) the main chip (d) the voltage regulator
  20. 20.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) brings power and code (c) runs the program (d) keeps the voltage steady
  21. 21.True or false: a microcontroller uses very little power. (a) False (b) True
  22. 22.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  23. 23.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the power LED (c) the USB port (d) the pins
  24. 24.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  25. 25.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  26. 26.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  27. 27.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  28. 28.Which of these has no microcontroller inside? (a) a toy robot (b) a candle (c) a washing machine (d) a smart watch
  29. 29.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  30. 30.Which job is done by the pins? (a) shows the board is on (b) runs the program (c) brings power and code (d) connect sensors and LEDs
  31. 31.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  32. 32.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  33. 33.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the main chip (c) the pins (d) the USB port
  34. 34.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  35. 35.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  36. 36.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  37. 37.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a wind-up toy (d) a microwave oven
  38. 38.Which job is done by the main chip? (a) runs the program (b) connect sensors and LEDs (c) brings power and code (d) keeps the voltage steady
  39. 39.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a smart watch (c) a plain wall switch (d) a wind-up toy
  40. 40.🤖 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

Answer key

  1. microcontroller
  2. microcontroller
  3. a TV remote
  4. Yes
  5. uploaded over USB
  6. False
  7. brings power and code
  8. flash memory
  9. a hand pump
  10. it starts again
  11. No
  12. the USB port
  13. No
  14. the pins
  15. False
  16. No
  17. microcontroller
  18. Yes
  19. the voltage regulator
  20. keeps the voltage steady
  21. True
  22. True
  23. the power LED
  24. True
  25. Yes
  26. False
  27. True
  28. a candle
  29. False
  30. connect sensors and LEDs
  31. True
  32. laptop
  33. the main chip
  34. True
  35. False
  36. False
  37. a microwave oven
  38. runs the program
  39. a smart watch
  40. USB or a 9 V battery

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