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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 484 · 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.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  2. 2.🤖 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
  3. 3.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  4. 4.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  5. 5.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a type of battery (d) a computer on one chip
  6. 6.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  7. 7.True or false: a laptop uses very little power. (a) True (b) False
  8. 8.Which job is done by the voltage regulator? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) restarts the program
  9. 9.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the reset button (c) the power LED (d) the voltage regulator
  10. 10.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) bare mains wires (d) a wall socket directly
  11. 11.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  12. 12.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  13. 13.True or false: a microcontroller needs much more power. (a) True (b) False
  14. 14.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  15. 15.🤖 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
  16. 16.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  17. 17.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  18. 18.Which job is done by the power LED? (a) brings power and code (b) runs the program (c) shows the board is on (d) restarts the program
  19. 19.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  20. 20.Which of these usually has a microcontroller inside? (a) a hand pump (b) a microwave oven (c) a plain wall switch (d) a spinning top
  21. 21.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  22. 22.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the USB port (c) the power LED (d) the pins
  23. 23.True or false: a microcontroller runs many apps at once. (a) True (b) False
  24. 24.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the reset button (c) the USB port (d) the power LED
  25. 25.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  26. 26.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  27. 27.Which job is done by the USB port? (a) keeps the voltage steady (b) restarts the program (c) shows the board is on (d) brings power and code
  28. 28.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the voltage regulator (c) the reset button (d) the USB port
  29. 29.True or false: a laptop runs one small program. (a) False (b) True
  30. 30.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  31. 31.True or false: a laptop has no screen of its own. (a) True (b) False
  32. 32.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) the board breaks (d) it stops forever
  33. 33.True or false: a laptop needs much more power. (a) False (b) True
  34. 34.Which job is done by the reset button? (a) keeps the voltage steady (b) brings power and code (c) connect sensors and LEDs (d) restarts the program
  35. 35.True or false: a microcontroller runs one small program. (a) True (b) False
  36. 36.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  37. 37.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  38. 38.True or false: a laptop has a built-in keyboard. (a) True (b) False
  39. 39.Which job is done by the pins? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) keeps the voltage steady
  40. 40.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the main chip (c) the power LED (d) the USB port

Answer key

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

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