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Electronics Worksheet: What Is a Microcontroller

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

Answer key

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

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