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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 361 · 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.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  2. 2.True or false: a laptop runs many apps at once. (a) False (b) True
  3. 3.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the power LED (c) the main chip (d) the reset button
  4. 4.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a plain wall switch (c) a washing machine (d) a hand pump
  5. 5.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the voltage regulator (c) the pins (d) the reset button
  6. 6.Which job is done by the main chip? (a) connect sensors and LEDs (b) restarts the program (c) runs the program (d) keeps the voltage steady
  7. 7.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  8. 8.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it stops forever (d) it starts again
  9. 9.True or false: a laptop runs one small program. (a) True (b) False
  10. 10.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  11. 11.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the voltage regulator (c) the main chip (d) the reset button
  12. 12.🤖 What is a microcontroller? (a) a big desktop computer (b) a computer on one chip (c) a type of battery (d) a kind of bulb
  13. 13.Which job is done by the power LED? (a) connect sensors and LEDs (b) brings power and code (c) shows the board is on (d) keeps the voltage steady
  14. 14.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a plain wall switch (c) a candle (d) a wind-up toy
  15. 15.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  16. 16.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  17. 17.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a spinning top (d) a TV remote
  18. 18.🤖 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
  19. 19.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a toy robot (d) a candle
  20. 20.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  21. 21.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) flash memory (c) the power LED (d) the USB cable
  22. 22.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  23. 23.Which job is done by the reset button? (a) brings power and code (b) restarts the program (c) connect sensors and LEDs (d) runs the program
  24. 24.True or false: a microcontroller runs many apps at once. (a) True (b) False
  25. 25.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  26. 26.True or false: a microcontroller needs much more power. (a) True (b) False
  27. 27.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a hand pump (c) a plain wall switch (d) a TV remote
  28. 28.Which job is done by the USB port? (a) brings power and code (b) restarts the program (c) shows the board is on (d) keeps the voltage steady
  29. 29.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  30. 30.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the voltage regulator (c) the reset button (d) the power LED
  31. 31.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  32. 32.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  33. 33.True or false: a microcontroller runs one small program. (a) True (b) False
  34. 34.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  35. 35.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  36. 36.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the reset button (c) the USB port (d) the power LED
  37. 37.True or false: a laptop uses very little power. (a) False (b) True
  38. 38.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  39. 39.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  40. 40.True or false: a washing machine has no microcontroller inside. (a) False (b) True

Answer key

  1. No
  2. True
  3. the reset button
  4. a washing machine
  5. the voltage regulator
  6. runs the program
  7. False
  8. it starts again
  9. False
  10. False
  11. the main chip
  12. a computer on one chip
  13. shows the board is on
  14. a digital thermometer
  15. Yes
  16. No
  17. a spinning top
  18. USB or a 9 V battery
  19. a toy robot
  20. microcontroller
  21. flash memory
  22. True
  23. restarts the program
  24. False
  25. microcontroller
  26. False
  27. a TV remote
  28. brings power and code
  29. Yes
  30. the power LED
  31. True
  32. No
  33. True
  34. True
  35. True
  36. the pins
  37. False
  38. False
  39. True
  40. False

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