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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 106 · 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.

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

Answer key

  1. True
  2. False
  3. brings power and code
  4. a washing machine
  5. False
  6. a bicycle bell
  7. the voltage regulator
  8. connect sensors and LEDs
  9. a digital thermometer
  10. microcontroller
  11. True
  12. a spinning top
  13. the pins
  14. Yes
  15. the main chip
  16. USB or a 9 V battery
  17. True
  18. laptop
  19. No
  20. flash memory
  21. the reset button
  22. uploaded over USB
  23. a smart watch
  24. False
  25. False
  26. True
  27. laptop
  28. False
  29. True
  30. Yes
  31. True
  32. it starts again
  33. the power LED
  34. microcontroller
  35. False
  36. Yes
  37. False
  38. Yes
  39. No
  40. Yes

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