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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 295 · 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 job is done by the voltage regulator? (a) brings power and code (b) connect sensors and LEDs (c) keeps the voltage steady (d) restarts the program
  2. 2.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  3. 3.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  4. 4.Which job is done by the power LED? (a) restarts the program (b) runs the program (c) shows the board is on (d) brings power and code
  5. 5.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a toy robot (c) a hand pump (d) a spinning top
  6. 6.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the voltage regulator (c) the USB port (d) the pins
  7. 7.Which of these has no microcontroller inside? (a) a toy robot (b) a plain wall switch (c) a digital alarm clock (d) a washing machine
  8. 8.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the reset button (c) the power LED (d) the voltage regulator
  9. 9.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  10. 10.Which job is done by the reset button? (a) runs the program (b) restarts the program (c) shows the board is on (d) connect sensors and LEDs
  11. 11.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  12. 12.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the power LED (c) the main chip (d) the pins
  13. 13.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  14. 14.True or false: a laptop runs one small program. (a) False (b) True
  15. 15.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  16. 16.Which job is done by the main chip? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) runs the program
  17. 17.Which of these has no microcontroller inside? (a) a TV remote (b) a digital alarm clock (c) a candle (d) a microwave oven
  18. 18.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  19. 19.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  20. 20.True or false: a laptop runs many apps at once. (a) True (b) False
  21. 21.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  22. 22.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  23. 23.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a type of battery (d) a computer on one chip
  24. 24.True or false: a microcontroller uses very little power. (a) True (b) False
  25. 25.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  26. 26.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the USB port (c) the reset button (d) the pins
  27. 27.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  28. 28.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  29. 29.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  30. 30.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  31. 31.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  32. 32.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) a 230 V cable (d) USB or a 9 V battery
  33. 33.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  34. 34.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it starts again (d) it stops forever
  35. 35.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a microwave oven (d) a plain wall switch
  36. 36.True or false: a microcontroller runs many apps at once. (a) False (b) True
  37. 37.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a TV remote (c) a spinning top (d) a toy robot
  38. 38.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  39. 39.True or false: a microcontroller needs much more power. (a) True (b) False
  40. 40.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes

Answer key

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

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