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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 248 · 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 laptop uses very little power. (a) True (b) False
  2. 2.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a washing machine (c) a hand pump (d) a plain wall switch
  3. 3.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the main chip (c) the USB port (d) the reset button
  4. 4.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) USB or a 9 V battery (d) a wall socket directly
  5. 5.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  6. 6.True or false: a microcontroller runs many apps at once. (a) False (b) True
  7. 7.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  8. 8.Which job is done by the pins? (a) runs the program (b) shows the board is on (c) connect sensors and LEDs (d) restarts the program
  9. 9.True or false: a microcontroller uses very little power. (a) False (b) True
  10. 10.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  11. 11.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the USB port (c) the pins (d) the power LED
  12. 12.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a toy robot (c) a spinning top (d) a plain wall switch
  13. 13.Which job is done by the main chip? (a) connect sensors and LEDs (b) runs the program (c) restarts the program (d) shows the board is on
  14. 14.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a bicycle bell (d) a digital thermometer
  15. 15.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  16. 16.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the power LED (c) the main chip (d) the voltage regulator
  17. 17.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the main chip (c) the pins (d) the reset button
  18. 18.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a kind of bulb (d) a computer on one chip
  19. 19.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  20. 20.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  21. 21.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  22. 22.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  23. 23.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
  24. 24.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  25. 25.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  26. 26.True or false: a microcontroller runs one small program. (a) False (b) True
  27. 27.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  28. 28.Which job is done by the power LED? (a) restarts the program (b) connect sensors and LEDs (c) shows the board is on (d) keeps the voltage steady
  29. 29.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  30. 30.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the power LED (c) the pins (d) the USB port
  31. 31.True or false: a laptop has no screen of its own. (a) False (b) True
  32. 32.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  33. 33.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  34. 34.Which job is done by the USB port? (a) runs the program (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  35. 35.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a plain wall switch (d) a candle
  36. 36.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  37. 37.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the power LED (c) the USB port (d) the voltage regulator
  38. 38.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  39. 39.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) it deletes itself (d) the board breaks
  40. 40.Which of these has no microcontroller inside? (a) a spinning top (b) a digital alarm clock (c) a microwave oven (d) a washing machine

Answer key

  1. False
  2. a washing machine
  3. the reset button
  4. USB or a 9 V battery
  5. No
  6. False
  7. microcontroller
  8. connect sensors and LEDs
  9. True
  10. Yes
  11. the pins
  12. a toy robot
  13. runs the program
  14. a digital thermometer
  15. False
  16. the USB port
  17. the main chip
  18. a computer on one chip
  19. False
  20. microcontroller
  21. Yes
  22. No
  23. keeps the voltage steady
  24. laptop
  25. microcontroller
  26. True
  27. True
  28. shows the board is on
  29. laptop
  30. the voltage regulator
  31. False
  32. No
  33. laptop
  34. brings power and code
  35. a microwave oven
  36. True
  37. the power LED
  38. True
  39. it starts again
  40. a spinning top

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