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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 137 · 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 job is done by the power LED? (a) brings power and code (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  2. 2.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  3. 3.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  4. 4.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  5. 5.True or false: a laptop runs one small program. (a) True (b) False
  6. 6.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  7. 7.True or false: a laptop has a built-in keyboard. (a) True (b) False
  8. 8.True or false: a microcontroller runs many apps at once. (a) True (b) False
  9. 9.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a bicycle bell (d) a spinning top
  10. 10.Which job is done by the pins? (a) shows the board is on (b) restarts the program (c) runs the program (d) connect sensors and LEDs
  11. 11.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the reset button (c) the main chip (d) the voltage regulator
  12. 12.True or false: a laptop has no screen of its own. (a) False (b) True
  13. 13.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  14. 14.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  15. 15.True or false: a washing machine has no microcontroller inside. (a) False (b) True
  16. 16.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the USB port (c) the reset button (d) the power LED
  17. 17.True or false: a laptop needs much more power. (a) False (b) True
  18. 18.True or false: a microcontroller runs one small program. (a) False (b) True
  19. 19.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  20. 20.Which of these has no microcontroller inside? (a) a microwave oven (b) a toy robot (c) a smart watch (d) a candle
  21. 21.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  22. 22.True or false: a microcontroller has no screen of its own. (a) False (b) True
  23. 23.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) the resistor (d) flash memory
  24. 24.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  25. 25.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a kind of bulb (d) a big desktop computer
  26. 26.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  27. 27.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  28. 28.🤖 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
  29. 29.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  30. 30.Which job is done by the USB port? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) keeps the voltage steady
  31. 31.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the main chip (c) the reset button (d) the power LED
  32. 32.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  33. 33.True or false: a toy robot has no microcontroller inside. (a) False (b) True
  34. 34.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  35. 35.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a wind-up toy (d) a toy robot
  36. 36.True or false: a laptop uses very little power. (a) False (b) True
  37. 37.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the USB port (c) the pins (d) the voltage regulator
  38. 38.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) typed on the chip (d) uploaded over USB
  39. 39.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  40. 40.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False

Answer key

  1. shows the board is on
  2. No
  3. laptop
  4. Yes
  5. False
  6. Yes
  7. True
  8. False
  9. a microwave oven
  10. connect sensors and LEDs
  11. the USB port
  12. False
  13. Yes
  14. microcontroller
  15. False
  16. the power LED
  17. True
  18. True
  19. False
  20. a candle
  21. laptop
  22. True
  23. flash memory
  24. Yes
  25. a computer on one chip
  26. False
  27. No
  28. USB or a 9 V battery
  29. True
  30. brings power and code
  31. the main chip
  32. keeps the voltage steady
  33. False
  34. False
  35. a wind-up toy
  36. False
  37. the pins
  38. uploaded over USB
  39. Yes
  40. False

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