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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 220 · 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.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  2. 2.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  3. 3.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a digital thermometer (d) a candle
  4. 4.True or false: a laptop has a built-in keyboard. (a) True (b) False
  5. 5.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  6. 6.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  7. 7.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the reset button (c) the pins (d) the USB port
  8. 8.Which job is done by the voltage regulator? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) runs the program
  9. 9.Which job is done by the reset button? (a) connect sensors and LEDs (b) shows the board is on (c) restarts the program (d) runs the program
  10. 10.Which of these has no microcontroller inside? (a) a digital thermometer (b) a washing machine (c) a digital alarm clock (d) a candle
  11. 11.Which of these has no microcontroller inside? (a) a wind-up toy (b) a toy robot (c) a microwave oven (d) a TV remote
  12. 12.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  13. 13.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) drawn with a pen (d) sent by sound
  14. 14.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  15. 15.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a digital alarm clock (d) a spinning top
  16. 16.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  17. 17.True or false: a laptop uses very little power. (a) True (b) False
  18. 18.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  19. 19.True or false: a microcontroller has no screen of its own. (a) False (b) True
  20. 20.True or false: a candle has no microcontroller inside. (a) True (b) False
  21. 21.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  22. 22.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  23. 23.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  24. 24.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the reset button (c) the pins (d) the voltage regulator
  25. 25.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  26. 26.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  27. 27.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  28. 28.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the reset button (c) the pins (d) the main chip
  29. 29.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  30. 30.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  31. 31.Which job is done by the main chip? (a) restarts the program (b) keeps the voltage steady (c) runs the program (d) shows the board is on
  32. 32.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the main chip (c) the USB port (d) the voltage regulator
  33. 33.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the power LED (d) the resistor
  34. 34.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  35. 35.True or false: a laptop runs one small program. (a) True (b) False
  36. 36.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) a wall socket directly (d) bare mains wires
  37. 37.Which job is done by the pins? (a) shows the board is on (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  38. 38.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a candle (d) a TV remote
  39. 39.True or false: a laptop runs many apps at once. (a) True (b) False
  40. 40.Which of these has no microcontroller inside? (a) a washing machine (b) a digital thermometer (c) a plain wall switch (d) a microwave oven

Answer key

  1. False
  2. Yes
  3. a digital thermometer
  4. True
  5. laptop
  6. Yes
  7. the reset button
  8. keeps the voltage steady
  9. restarts the program
  10. a candle
  11. a wind-up toy
  12. No
  13. uploaded over USB
  14. False
  15. a digital alarm clock
  16. No
  17. False
  18. True
  19. True
  20. True
  21. False
  22. Yes
  23. laptop
  24. the voltage regulator
  25. No
  26. microcontroller
  27. Yes
  28. the pins
  29. laptop
  30. True
  31. runs the program
  32. the power LED
  33. flash memory
  34. False
  35. False
  36. USB or a 9 V battery
  37. connect sensors and LEDs
  38. a TV remote
  39. True
  40. a plain wall switch

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