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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 475 · 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 part of a microcontroller board brings power and code? (a) the USB port (b) the voltage regulator (c) the reset button (d) the pins
  2. 2.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  3. 3.Which of these has no microcontroller inside? (a) a digital thermometer (b) a digital alarm clock (c) a smart watch (d) a wind-up toy
  4. 4.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  5. 5.True or false: a microcontroller runs one small program. (a) False (b) True
  6. 6.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the pins (c) the voltage regulator (d) the main chip
  7. 7.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) the resistor (d) flash memory
  8. 8.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  9. 9.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  10. 10.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  11. 11.Which job is done by the voltage regulator? (a) runs the program (b) restarts the program (c) brings power and code (d) keeps the voltage steady
  12. 12.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a wall socket directly (d) a 230 V cable
  13. 13.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  14. 14.Which job is done by the reset button? (a) shows the board is on (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  15. 15.🤖 What is a microcontroller? (a) a kind of bulb (b) a computer on one chip (c) a big desktop computer (d) a type of battery
  16. 16.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  17. 17.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the power LED (c) the voltage regulator (d) the pins
  18. 18.True or false: a laptop needs much more power. (a) False (b) True
  19. 19.True or false: a microcontroller uses very little power. (a) False (b) True
  20. 20.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the pins (c) the USB port (d) the reset button
  21. 21.True or false: a candle has no microcontroller inside. (a) False (b) True
  22. 22.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a spinning top (c) a washing machine (d) a TV remote
  23. 23.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the voltage regulator (c) the USB port (d) the pins
  24. 24.Which of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a microwave oven (d) a plain wall switch
  25. 25.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  26. 26.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  27. 27.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the pins (c) the power LED (d) the main chip
  28. 28.True or false: a laptop has no screen of its own. (a) False (b) True
  29. 29.True or false: a microcontroller runs many apps at once. (a) True (b) False
  30. 30.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  31. 31.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a candle (c) a spinning top (d) a wind-up toy
  32. 32.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  33. 33.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  34. 34.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  35. 35.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) typed on the chip (d) sent by sound
  36. 36.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  37. 37.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  38. 38.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  39. 39.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) the board breaks (d) it starts again
  40. 40.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No

Answer key

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

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