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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 128 · 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 digital alarm clock has no microcontroller inside. (a) True (b) False
  2. 2.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the voltage regulator (c) the USB port (d) the pins
  3. 3.🤖 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
  4. 4.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a digital thermometer (c) a candle (d) a hand pump
  5. 5.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  6. 6.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  7. 7.Which of these has no microcontroller inside? (a) a spinning top (b) a microwave oven (c) a toy robot (d) a TV remote
  8. 8.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  9. 9.Which job is done by the USB port? (a) restarts the program (b) runs the program (c) brings power and code (d) shows the board is on
  10. 10.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the main chip (c) the pins (d) the reset button
  11. 11.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  12. 12.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  13. 13.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a TV remote (d) a wind-up toy
  14. 14.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  15. 15.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a computer on one chip (d) a kind of bulb
  16. 16.Which job is done by the main chip? (a) restarts the program (b) runs the program (c) connect sensors and LEDs (d) shows the board is on
  17. 17.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  18. 18.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a candle (c) a hand pump (d) a wind-up toy
  19. 19.Which job is done by the power LED? (a) brings power and code (b) restarts the program (c) runs the program (d) shows the board is on
  20. 20.True or false: a laptop runs one small program. (a) True (b) False
  21. 21.True or false: a microcontroller needs much more power. (a) True (b) False
  22. 22.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) uploaded over USB (d) sent by sound
  23. 23.Which of these has no microcontroller inside? (a) a toy robot (b) a digital alarm clock (c) a smart watch (d) a plain wall switch
  24. 24.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  25. 25.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the reset button (c) the voltage regulator (d) the main chip
  26. 26.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  27. 27.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  28. 28.Which job is done by the voltage regulator? (a) shows the board is on (b) runs the program (c) keeps the voltage steady (d) brings power and code
  29. 29.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  30. 30.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  31. 31.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  32. 32.True or false: a laptop needs much more power. (a) True (b) False
  33. 33.True or false: a microcontroller uses very little power. (a) True (b) False
  34. 34.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) the board breaks (c) it deletes itself (d) it stops forever
  35. 35.True or false: a candle has no microcontroller inside. (a) True (b) False
  36. 36.Which of these usually has a microcontroller inside? (a) a smart watch (b) a hand pump (c) a plain wall switch (d) a candle
  37. 37.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  38. 38.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  39. 39.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  40. 40.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes

Answer key

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

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