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Electronics Worksheet: What Is a Microcontroller

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

Answer key

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

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