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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 710 · 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 of these usually has a microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a candle (d) a plain wall switch
  2. 2.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
  3. 3.Which job is done by the power LED? (a) connect sensors and LEDs (b) brings power and code (c) runs the program (d) shows the board is on
  4. 4.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the main chip (c) the pins (d) the reset button
  5. 5.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  6. 6.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  7. 7.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  8. 8.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  9. 9.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the power LED (c) the pins (d) the reset button
  10. 10.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the pins (c) the USB port (d) the main chip
  11. 11.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  12. 12.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  13. 13.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  14. 14.True or false: a laptop has no screen of its own. (a) True (b) False
  15. 15.True or false: a microcontroller runs one small program. (a) False (b) True
  16. 16.Which of these has no microcontroller inside? (a) a washing machine (b) a digital thermometer (c) a wind-up toy (d) a microwave oven
  17. 17.Which job is done by the voltage regulator? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) keeps the voltage steady
  18. 18.🤖 What is a microcontroller? (a) a kind of bulb (b) a computer on one chip (c) a type of battery (d) a big desktop computer
  19. 19.True or false: a laptop needs much more power. (a) False (b) True
  20. 20.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the power LED (c) the USB port (d) the main chip
  21. 21.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  22. 22.True or false: a laptop runs many apps at once. (a) False (b) True
  23. 23.Which of these has no microcontroller inside? (a) a microwave oven (b) a washing machine (c) a digital alarm clock (d) a spinning top
  24. 24.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  25. 25.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a smart watch (d) a candle
  26. 26.True or false: a microcontroller uses very little power. (a) True (b) False
  27. 27.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  28. 28.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) USB or a 9 V battery (d) a wall socket directly
  29. 29.Which of these has no microcontroller inside? (a) a toy robot (b) a smart watch (c) a hand pump (d) a TV remote
  30. 30.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  31. 31.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  32. 32.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a wind-up toy (d) a digital alarm clock
  33. 33.Which job is done by the USB port? (a) keeps the voltage steady (b) restarts the program (c) brings power and code (d) shows the board is on
  34. 34.Which job is done by the reset button? (a) brings power and code (b) restarts the program (c) shows the board is on (d) keeps the voltage steady
  35. 35.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  36. 36.True or false: a laptop runs one small program. (a) False (b) True
  37. 37.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  38. 38.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  39. 39.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) flash memory (d) the USB cable
  40. 40.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No

Answer key

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

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