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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 377 · 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 has no microcontroller inside? (a) a microwave oven (b) a smart watch (c) a washing machine (d) a wind-up toy
  2. 2.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a wind-up toy (d) a washing machine
  3. 3.Which of these has no microcontroller inside? (a) a digital thermometer (b) a digital alarm clock (c) a washing machine (d) a candle
  4. 4.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) bare mains wires (d) a wall socket directly
  5. 5.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  6. 6.True or false: a laptop runs one small program. (a) True (b) False
  7. 7.Which job is done by the power LED? (a) shows the board is on (b) connect sensors and LEDs (c) brings power and code (d) keeps the voltage steady
  8. 8.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the main chip (c) the pins (d) the USB port
  9. 9.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  10. 10.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the power LED (c) the reset button (d) the voltage regulator
  11. 11.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  12. 12.Which job is done by the USB port? (a) restarts the program (b) brings power and code (c) connect sensors and LEDs (d) keeps the voltage steady
  13. 13.🤖 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
  14. 14.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  15. 15.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  16. 16.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  17. 17.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a smart watch (d) a spinning top
  18. 18.Which job is done by the main chip? (a) restarts the program (b) runs the program (c) keeps the voltage steady (d) brings power and code
  19. 19.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  20. 20.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) keeps the voltage steady
  21. 21.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  22. 22.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  23. 23.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a washing machine (c) a plain wall switch (d) a smart watch
  24. 24.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  25. 25.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  26. 26.Which job is done by the reset button? (a) shows the board is on (b) restarts the program (c) runs the program (d) connect sensors and LEDs
  27. 27.Which of these usually has a microcontroller inside? (a) a hand pump (b) a bicycle bell (c) a candle (d) a microwave oven
  28. 28.🤖 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
  29. 29.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) the board breaks (d) it deletes itself
  30. 30.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  31. 31.True or false: a microcontroller needs much more power. (a) True (b) False
  32. 32.True or false: a laptop has a built-in keyboard. (a) True (b) False
  33. 33.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  34. 34.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a computer on one chip (d) a kind of bulb
  35. 35.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  36. 36.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a toy robot (d) a wind-up toy
  37. 37.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  38. 38.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  39. 39.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  40. 40.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the USB port (c) the voltage regulator (d) the pins

Answer key

  1. a wind-up toy
  2. a washing machine
  3. a candle
  4. USB or a 9 V battery
  5. microcontroller
  6. False
  7. shows the board is on
  8. the power LED
  9. True
  10. the voltage regulator
  11. Yes
  12. brings power and code
  13. flash memory
  14. microcontroller
  15. laptop
  16. True
  17. a smart watch
  18. runs the program
  19. False
  20. keeps the voltage steady
  21. No
  22. True
  23. a plain wall switch
  24. Yes
  25. False
  26. restarts the program
  27. a microwave oven
  28. uploaded over USB
  29. it starts again
  30. False
  31. False
  32. True
  33. True
  34. a computer on one chip
  35. microcontroller
  36. a toy robot
  37. laptop
  38. laptop
  39. No
  40. the pins

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