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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 378 · 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.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  2. 2.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a plain wall switch (d) a digital alarm clock
  3. 3.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the power LED (c) the main chip (d) the USB port
  4. 4.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the power LED (c) the pins (d) the main chip
  5. 5.Which job is done by the reset button? (a) restarts the program (b) shows the board is on (c) runs the program (d) brings power and code
  6. 6.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  7. 7.True or false: a microcontroller has no screen of its own. (a) False (b) True
  8. 8.Which of these has no microcontroller inside? (a) a candle (b) a smart watch (c) a digital thermometer (d) a washing machine
  9. 9.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the USB cable (c) the power LED (d) flash memory
  10. 10.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a microwave oven (d) a bicycle bell
  11. 11.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  12. 12.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a wall socket directly (d) a 230 V cable
  13. 13.True or false: a laptop needs much more power. (a) False (b) True
  14. 14.Which job is done by the voltage regulator? (a) brings power and code (b) runs the program (c) keeps the voltage steady (d) connect sensors and LEDs
  15. 15.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it starts again (d) it stops forever
  16. 16.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  17. 17.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  18. 18.True or false: a laptop has no screen of its own. (a) False (b) True
  19. 19.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  20. 20.Which of these has no microcontroller inside? (a) a toy robot (b) a digital alarm clock (c) a wind-up toy (d) a digital thermometer
  21. 21.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  22. 22.Which of these usually has a microcontroller inside? (a) a smart watch (b) a candle (c) a spinning top (d) a wind-up toy
  23. 23.Which job is done by the USB port? (a) brings power and code (b) connect sensors and LEDs (c) runs the program (d) restarts the program
  24. 24.Which job is done by the pins? (a) keeps the voltage steady (b) restarts the program (c) runs the program (d) connect sensors and LEDs
  25. 25.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  26. 26.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  27. 27.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  28. 28.True or false: a microcontroller uses very little power. (a) False (b) True
  29. 29.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the power LED (c) the voltage regulator (d) the reset button
  30. 30.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a computer on one chip (d) a kind of bulb
  31. 31.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  32. 32.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  33. 33.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  34. 34.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the main chip (c) the power LED (d) the USB port
  35. 35.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  36. 36.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  37. 37.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) drawn with a pen (d) typed on the chip
  38. 38.True or false: a laptop has a built-in keyboard. (a) True (b) False
  39. 39.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  40. 40.True or false: a microcontroller runs many apps at once. (a) True (b) False

Answer key

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

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