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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 286 · 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 part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the voltage regulator (c) the power LED (d) the pins
  2. 2.True or false: a laptop needs much more power. (a) False (b) True
  3. 3.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  4. 4.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a kind of bulb (d) a computer on one chip
  5. 5.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  6. 6.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  7. 7.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) the board breaks (d) it deletes itself
  8. 8.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the USB port (c) the main chip (d) the voltage regulator
  9. 9.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  10. 10.True or false: a microcontroller needs much more power. (a) False (b) True
  11. 11.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  12. 12.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the USB cable (c) the power LED (d) flash memory
  13. 13.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the USB port (c) the main chip (d) the power LED
  14. 14.Which job is done by the voltage regulator? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) restarts the program
  15. 15.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) drawn with a pen (d) uploaded over USB
  16. 16.Which job is done by the power LED? (a) shows the board is on (b) connect sensors and LEDs (c) runs the program (d) keeps the voltage steady
  17. 17.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  18. 18.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) a 230 V cable (d) USB or a 9 V battery
  19. 19.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  20. 20.Which of these has no microcontroller inside? (a) a toy robot (b) a bicycle bell (c) a washing machine (d) a digital alarm clock
  21. 21.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  22. 22.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  23. 23.Which job is done by the pins? (a) keeps the voltage steady (b) brings power and code (c) connect sensors and LEDs (d) runs the program
  24. 24.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  25. 25.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a toy robot (d) a candle
  26. 26.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the USB port (c) the reset button (d) the main chip
  27. 27.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  28. 28.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  29. 29.True or false: a microcontroller has no screen of its own. (a) True (b) False
  30. 30.Which of these has no microcontroller inside? (a) a spinning top (b) a TV remote (c) a digital thermometer (d) a washing machine
  31. 31.Which of these has no microcontroller inside? (a) a hand pump (b) a TV remote (c) a microwave oven (d) a smart watch
  32. 32.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a smart watch (d) a plain wall switch
  33. 33.True or false: a microcontroller runs one small program. (a) True (b) False
  34. 34.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  35. 35.True or false: a microcontroller uses very little power. (a) True (b) False
  36. 36.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  37. 37.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the pins (c) the USB port (d) the power LED
  38. 38.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a hand pump (d) a wind-up toy
  39. 39.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  40. 40.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the voltage regulator (c) the pins (d) the main chip

Answer key

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

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