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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 80 · 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.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  2. 2.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the main chip (c) the pins (d) the power LED
  3. 3.Which job is done by the pins? (a) brings power and code (b) runs the program (c) connect sensors and LEDs (d) keeps the voltage steady
  4. 4.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  5. 5.Which job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) connect sensors and LEDs (d) restarts the program
  6. 6.True or false: a laptop runs many apps at once. (a) True (b) False
  7. 7.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a hand pump (c) a washing machine (d) a microwave oven
  8. 8.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  9. 9.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) drawn with a pen (d) typed on the chip
  10. 10.Which of these has no microcontroller inside? (a) a smart watch (b) a washing machine (c) a toy robot (d) a wind-up toy
  11. 11.Which job is done by the reset button? (a) restarts the program (b) connect sensors and LEDs (c) runs the program (d) shows the board is on
  12. 12.Which job is done by the power LED? (a) runs the program (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  13. 13.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the pins (c) the main chip (d) the USB port
  14. 14.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  15. 15.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the pins (c) the main chip (d) the USB port
  16. 16.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  17. 17.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  18. 18.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  19. 19.Which of these usually has a microcontroller inside? (a) a hand pump (b) a spinning top (c) a washing machine (d) a bicycle bell
  20. 20.True or false: a spinning top has no microcontroller inside. (a) True (b) False
  21. 21.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  22. 22.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the voltage regulator (c) the pins (d) the reset button
  23. 23.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  24. 24.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  25. 25.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  26. 26.True or false: a laptop uses very little power. (a) False (b) True
  27. 27.True or false: a microcontroller uses very little power. (a) False (b) True
  28. 28.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  29. 29.True or false: a microcontroller runs one small program. (a) True (b) False
  30. 30.True or false: a microcontroller needs much more power. (a) True (b) False
  31. 31.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) the board breaks (d) it starts again
  32. 32.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  33. 33.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  34. 34.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  35. 35.Which job is done by the USB port? (a) runs the program (b) brings power and code (c) connect sensors and LEDs (d) restarts the program
  36. 36.True or false: a laptop runs one small program. (a) False (b) True
  37. 37.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  38. 38.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) the USB cable (d) flash memory
  39. 39.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a hand pump (c) a bicycle bell (d) a smart watch
  40. 40.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a candle (c) a plain wall switch (d) a wind-up toy

Answer key

  1. False
  2. the power LED
  3. connect sensors and LEDs
  4. True
  5. runs the program
  6. True
  7. a hand pump
  8. False
  9. uploaded over USB
  10. a wind-up toy
  11. restarts the program
  12. shows the board is on
  13. the USB port
  14. False
  15. the pins
  16. False
  17. Yes
  18. True
  19. a washing machine
  20. True
  21. No
  22. the reset button
  23. microcontroller
  24. Yes
  25. microcontroller
  26. False
  27. True
  28. microcontroller
  29. True
  30. False
  31. it starts again
  32. Yes
  33. Yes
  34. laptop
  35. brings power and code
  36. False
  37. No
  38. flash memory
  39. a smart watch
  40. a digital alarm clock

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