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Electronics Worksheet: What Is a Microcontroller

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

Answer key

  1. a washing machine
  2. False
  3. False
  4. microcontroller
  5. True
  6. Yes
  7. microcontroller
  8. a hand pump
  9. a computer on one chip
  10. the power LED
  11. False
  12. laptop
  13. the voltage regulator
  14. Yes
  15. No
  16. flash memory
  17. the reset button
  18. brings power and code
  19. Yes
  20. a spinning top
  21. Yes
  22. Yes
  23. False
  24. True
  25. True
  26. restarts the program
  27. the USB port
  28. False
  29. USB or a 9 V battery
  30. a candle
  31. the pins
  32. a TV remote
  33. True
  34. True
  35. it starts again
  36. False
  37. Yes
  38. No
  39. runs the program
  40. keeps the voltage steady

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