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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 86 · 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 part of a microcontroller board brings power and code? (a) the pins (b) the USB port (c) the main chip (d) the power LED
  2. 2.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  3. 3.True or false: a microcontroller needs much more power. (a) True (b) False
  4. 4.True or false: a microcontroller runs one small program. (a) False (b) True
  5. 5.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  6. 6.Which job is done by the main chip? (a) brings power and code (b) shows the board is on (c) connect sensors and LEDs (d) runs the program
  7. 7.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  8. 8.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a toy robot (d) a plain wall switch
  9. 9.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a TV remote (c) a candle (d) a hand pump
  10. 10.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) the power LED (d) flash memory
  11. 11.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the pins (c) the power LED (d) the USB port
  12. 12.True or false: a microcontroller has no screen of its own. (a) False (b) True
  13. 13.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a wind-up toy (d) a microwave oven
  14. 14.Which job is done by the reset button? (a) restarts the program (b) connect sensors and LEDs (c) runs the program (d) brings power and code
  15. 15.Which job is done by the power LED? (a) shows the board is on (b) restarts the program (c) runs the program (d) keeps the voltage steady
  16. 16.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it stops forever (d) it deletes itself
  17. 17.🤖 What is a microcontroller? (a) a kind of bulb (b) a computer on one chip (c) a big desktop computer (d) a type of battery
  18. 18.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  19. 19.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  20. 20.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital alarm clock (c) a candle (d) a wind-up toy
  21. 21.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  22. 22.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a toy robot (d) a hand pump
  23. 23.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  24. 24.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the main chip (c) the voltage regulator (d) the pins
  25. 25.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) uploaded over USB (d) sent by sound
  26. 26.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  27. 27.True or false: a microcontroller runs many apps at once. (a) True (b) False
  28. 28.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  29. 29.True or false: a laptop uses very little power. (a) True (b) False
  30. 30.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  31. 31.Which job is done by the USB port? (a) runs the program (b) keeps the voltage steady (c) brings power and code (d) shows the board is on
  32. 32.True or false: a laptop has no screen of its own. (a) False (b) True
  33. 33.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the reset button (c) the pins (d) the main chip
  34. 34.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  35. 35.🤖 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
  36. 36.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  37. 37.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  38. 38.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  39. 39.Which of these has no microcontroller inside? (a) a toy robot (b) a spinning top (c) a digital thermometer (d) a microwave oven
  40. 40.True or false: a laptop has a built-in keyboard. (a) True (b) False

Answer key

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

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