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Electronics Worksheet: What Is a Microcontroller

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

Answer key

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

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