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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 682 · 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.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) it stops forever (d) the board breaks
  2. 2.Which job is done by the main chip? (a) restarts the program (b) connect sensors and LEDs (c) runs the program (d) brings power and code
  3. 3.True or false: a laptop has a built-in keyboard. (a) False (b) True
  4. 4.Which of these has no microcontroller inside? (a) a plain wall switch (b) a washing machine (c) a smart watch (d) a digital thermometer
  5. 5.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  6. 6.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  7. 7.Which job is done by the USB port? (a) keeps the voltage steady (b) shows the board is on (c) runs the program (d) brings power and code
  8. 8.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) sent by sound (d) drawn with a pen
  9. 9.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the reset button (c) the voltage regulator (d) the power LED
  11. 11.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  12. 12.Which job is done by the reset button? (a) runs the program (b) shows the board is on (c) connect sensors and LEDs (d) restarts the program
  13. 13.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  14. 14.True or false: a microcontroller runs one small program. (a) False (b) True
  15. 15.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  16. 16.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  17. 17.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a computer on one chip (d) a type of battery
  18. 18.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the power LED (c) the voltage regulator (d) the pins
  19. 19.Which of these has no microcontroller inside? (a) a wind-up toy (b) a smart watch (c) a toy robot (d) a washing machine
  20. 20.Which job is done by the pins? (a) runs the program (b) brings power and code (c) keeps the voltage steady (d) connect sensors and LEDs
  21. 21.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  22. 22.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  23. 23.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  24. 24.Which of these has no microcontroller inside? (a) a digital thermometer (b) a toy robot (c) a spinning top (d) a TV remote
  25. 25.True or false: a microcontroller needs much more power. (a) False (b) True
  26. 26.Which job is done by the power LED? (a) restarts the program (b) keeps the voltage steady (c) brings power and code (d) shows the board is on
  27. 27.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) USB or a 9 V battery (d) bare mains wires
  28. 28.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  29. 29.True or false: a laptop has no screen of its own. (a) True (b) False
  30. 30.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  31. 31.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  32. 32.🤖 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
  33. 33.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  34. 34.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  35. 35.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  36. 36.Which of these usually has a microcontroller inside? (a) a spinning top (b) a smart watch (c) a bicycle bell (d) a candle
  37. 37.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  38. 38.True or false: a laptop runs many apps at once. (a) True (b) False
  39. 39.Which job is done by the voltage regulator? (a) shows the board is on (b) runs the program (c) keeps the voltage steady (d) restarts the program
  40. 40.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the USB port (c) the pins (d) the reset button

Answer key

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

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