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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 216 · 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 plain wall switch usually has a microcontroller inside. (a) True (b) False
  2. 2.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  3. 3.🤖 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
  4. 4.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  5. 5.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) a wall socket directly (d) USB or a 9 V battery
  6. 6.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  7. 7.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) uploaded over USB (d) sent by sound
  8. 8.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  9. 9.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  11. 11.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  12. 12.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) shows the board is on (c) restarts the program (d) keeps the voltage steady
  13. 13.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  14. 14.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a smart watch (c) a toy robot (d) a bicycle bell
  15. 15.Which of these usually has a microcontroller inside? (a) a candle (b) a microwave oven (c) a bicycle bell (d) a plain wall switch
  16. 16.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the power LED (c) the pins (d) the reset button
  17. 17.True or false: a microcontroller uses very little power. (a) False (b) True
  18. 18.Which job is done by the main chip? (a) restarts the program (b) shows the board is on (c) runs the program (d) brings power and code
  19. 19.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the power LED (c) the main chip (d) the USB port
  20. 20.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a plain wall switch (d) a digital alarm clock
  21. 21.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  22. 22.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  23. 23.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  24. 24.Which of these has no microcontroller inside? (a) a toy robot (b) a TV remote (c) a candle (d) a digital thermometer
  25. 25.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  26. 26.Which of these usually has a microcontroller inside? (a) a smart watch (b) a plain wall switch (c) a bicycle bell (d) a wind-up toy
  27. 27.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  28. 28.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  29. 29.Which job is done by the USB port? (a) connect sensors and LEDs (b) keeps the voltage steady (c) restarts the program (d) brings power and code
  30. 30.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  31. 31.Which of these has no microcontroller inside? (a) a plain wall switch (b) a washing machine (c) a digital thermometer (d) a smart watch
  32. 32.True or false: a laptop has a built-in keyboard. (a) True (b) False
  33. 33.True or false: a microcontroller needs much more power. (a) True (b) False
  34. 34.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it deletes itself (d) it starts again
  35. 35.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  36. 36.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  37. 37.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a plain wall switch (c) a spinning top (d) a wind-up toy
  38. 38.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the power LED (c) the voltage regulator (d) the pins
  39. 39.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  40. 40.Which of these has no microcontroller inside? (a) a digital thermometer (b) a digital alarm clock (c) a hand pump (d) a TV remote

Answer key

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

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