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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 480 · 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 digital alarm clock (b) a spinning top (c) a candle (d) a plain wall switch
  2. 2.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  3. 3.True or false: a microcontroller has no screen of its own. (a) False (b) True
  4. 4.True or false: a laptop has no screen of its own. (a) False (b) True
  5. 5.Which of these has no microcontroller inside? (a) a microwave oven (b) a washing machine (c) a candle (d) a smart watch
  6. 6.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  7. 7.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the power LED (c) the main chip (d) the USB port
  8. 8.Which job is done by the voltage regulator? (a) runs the program (b) shows the board is on (c) brings power and code (d) keeps the voltage steady
  9. 9.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  10. 10.True or false: a microcontroller uses very little power. (a) False (b) True
  11. 11.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  12. 12.Which job is done by the main chip? (a) runs the program (b) keeps the voltage steady (c) shows the board is on (d) brings power and code
  13. 13.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  14. 14.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the main chip (c) the power LED (d) the voltage regulator
  15. 15.True or false: a laptop needs much more power. (a) False (b) True
  16. 16.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a big desktop computer (d) a computer on one chip
  17. 17.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  18. 18.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the main chip (c) the reset button (d) the power LED
  19. 19.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  20. 20.Which job is done by the power LED? (a) shows the board is on (b) connect sensors and LEDs (c) keeps the voltage steady (d) restarts the program
  21. 21.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the pins (d) the main chip
  22. 22.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the power LED (d) the resistor
  23. 23.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  24. 24.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it deletes itself (d) it starts again
  25. 25.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  26. 26.True or false: a hand pump has no microcontroller inside. (a) False (b) True
  27. 27.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital thermometer (c) a bicycle bell (d) a washing machine
  28. 28.Which of these has no microcontroller inside? (a) a smart watch (b) a toy robot (c) a digital thermometer (d) a plain wall switch
  29. 29.True or false: a laptop runs many apps at once. (a) False (b) True
  30. 30.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  31. 31.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  32. 32.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) sent by sound (d) uploaded over USB
  33. 33.True or false: a microcontroller runs one small program. (a) True (b) False
  34. 34.True or false: a microcontroller runs many apps at once. (a) True (b) False
  35. 35.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
  36. 36.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the pins (c) the power LED (d) the voltage regulator
  37. 37.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  38. 38.True or false: a laptop runs one small program. (a) True (b) False
  39. 39.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  40. 40.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False

Answer key

  1. a digital alarm clock
  2. No
  3. True
  4. False
  5. a candle
  6. No
  7. the USB port
  8. keeps the voltage steady
  9. False
  10. True
  11. True
  12. runs the program
  13. Yes
  14. the power LED
  15. True
  16. a computer on one chip
  17. True
  18. the reset button
  19. False
  20. shows the board is on
  21. the voltage regulator
  22. flash memory
  23. True
  24. it starts again
  25. False
  26. True
  27. a bicycle bell
  28. a plain wall switch
  29. True
  30. False
  31. No
  32. uploaded over USB
  33. True
  34. False
  35. USB or a 9 V battery
  36. the main chip
  37. True
  38. False
  39. False
  40. False

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