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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 524 · 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.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) the board breaks (c) it stops forever (d) it deletes itself
  2. 2.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  3. 3.Which of these has no microcontroller inside? (a) a bicycle bell (b) a TV remote (c) a digital alarm clock (d) a microwave oven
  4. 4.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) a wall socket directly (c) USB or a 9 V battery (d) bare mains wires
  5. 5.True or false: a microcontroller runs many apps at once. (a) True (b) False
  6. 6.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a plain wall switch (d) a washing machine
  7. 7.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the main chip (c) the USB port (d) the reset button
  8. 8.Which job is done by the main chip? (a) shows the board is on (b) connect sensors and LEDs (c) runs the program (d) restarts the program
  9. 9.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) the USB cable (d) flash memory
  10. 10.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  11. 11.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  12. 12.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the power LED (c) the reset button (d) the main chip
  13. 13.Which job is done by the voltage regulator? (a) shows the board is on (b) keeps the voltage steady (c) brings power and code (d) runs the program
  14. 14.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  15. 15.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the power LED (c) the USB port (d) the voltage regulator
  16. 16.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  17. 17.True or false: a microcontroller needs much more power. (a) False (b) True
  18. 18.Which of these has no microcontroller inside? (a) a microwave oven (b) a spinning top (c) a digital thermometer (d) a washing machine
  19. 19.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  20. 20.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a smart watch (d) a bicycle bell
  21. 21.Which job is done by the power LED? (a) restarts the program (b) runs the program (c) shows the board is on (d) brings power and code
  22. 22.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  23. 23.True or false: a laptop needs much more power. (a) False (b) True
  24. 24.🤖 What is a microcontroller? (a) a computer on one chip (b) a type of battery (c) a kind of bulb (d) a big desktop computer
  25. 25.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  26. 26.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a spinning top (c) a wind-up toy (d) a bicycle bell
  27. 27.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  28. 28.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  29. 29.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  30. 30.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a candle (d) a toy robot
  31. 31.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) sent by sound (d) uploaded over USB
  32. 32.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  33. 33.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the pins (c) the power LED (d) the reset button
  34. 34.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  35. 35.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  36. 36.Which job is done by the pins? (a) restarts the program (b) keeps the voltage steady (c) runs the program (d) connect sensors and LEDs
  37. 37.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  38. 38.Which of these has no microcontroller inside? (a) a smart watch (b) a toy robot (c) a hand pump (d) a digital thermometer
  39. 39.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  40. 40.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True

Answer key

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

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