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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 337 · 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 of these usually has a microcontroller inside? (a) a bicycle bell (b) a hand pump (c) a candle (d) a smart watch
  2. 2.Which of these has no microcontroller inside? (a) a washing machine (b) a toy robot (c) a candle (d) a digital thermometer
  3. 3.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  4. 4.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
  5. 5.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a computer on one chip (d) a type of battery
  6. 6.Which job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) brings power and code (d) connect sensors and LEDs
  7. 7.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  8. 8.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a wind-up toy (c) a spinning top (d) a TV remote
  9. 9.Which job is done by the voltage regulator? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) keeps the voltage steady
  10. 10.True or false: a laptop runs one small program. (a) True (b) False
  11. 11.Which job is done by the reset button? (a) brings power and code (b) shows the board is on (c) restarts the program (d) runs the program
  12. 12.Which of these has no microcontroller inside? (a) a microwave oven (b) a smart watch (c) a bicycle bell (d) a digital thermometer
  13. 13.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  14. 14.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a hand pump (c) a digital thermometer (d) a candle
  15. 15.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  16. 16.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  17. 17.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a wind-up toy (d) a digital alarm clock
  18. 18.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  19. 19.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the voltage regulator (c) the pins (d) the power LED
  20. 20.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the pins (c) the USB port (d) the main chip
  21. 21.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  22. 22.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  23. 23.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  24. 24.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  25. 25.True or false: a microcontroller runs one small program. (a) False (b) True
  26. 26.True or false: a laptop needs much more power. (a) True (b) False
  27. 27.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  28. 28.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  29. 29.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
  30. 30.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a plain wall switch (c) a candle (d) a microwave oven
  31. 31.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  32. 32.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  33. 33.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  34. 34.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the resistor (d) the USB cable
  35. 35.True or false: a microcontroller uses very little power. (a) True (b) False
  36. 36.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a washing machine (c) a bicycle bell (d) a spinning top
  37. 37.Which job is done by the pins? (a) shows the board is on (b) brings power and code (c) connect sensors and LEDs (d) restarts the program
  38. 38.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  39. 39.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  40. 40.True or false: a microcontroller needs much more power. (a) False (b) True

Answer key

  1. a smart watch
  2. a candle
  3. Yes
  4. uploaded over USB
  5. a computer on one chip
  6. runs the program
  7. Yes
  8. a TV remote
  9. keeps the voltage steady
  10. False
  11. restarts the program
  12. a bicycle bell
  13. No
  14. a digital thermometer
  15. laptop
  16. False
  17. a digital alarm clock
  18. True
  19. the pins
  20. the voltage regulator
  21. No
  22. Yes
  23. False
  24. Yes
  25. True
  26. True
  27. microcontroller
  28. True
  29. USB or a 9 V battery
  30. a microwave oven
  31. microcontroller
  32. False
  33. microcontroller
  34. flash memory
  35. True
  36. a washing machine
  37. connect sensors and LEDs
  38. False
  39. False
  40. False

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