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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 684 · 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.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) typed on the chip (d) drawn with a pen
  2. 2.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  3. 3.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  4. 4.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the resistor (d) the USB cable
  5. 5.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  6. 6.True or false: a laptop has a built-in keyboard. (a) True (b) False
  7. 7.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) USB or a 9 V battery (d) a wall socket directly
  8. 8.Which job is done by the pins? (a) runs the program (b) connect sensors and LEDs (c) restarts the program (d) shows the board is on
  9. 9.True or false: a laptop runs one small program. (a) False (b) True
  10. 10.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the power LED (d) the pins
  11. 11.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  12. 12.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  13. 13.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  14. 14.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  15. 15.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it deletes itself (d) it stops forever
  16. 16.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a bicycle bell (c) a washing machine (d) a digital thermometer
  17. 17.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a computer on one chip (d) a big desktop computer
  18. 18.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  19. 19.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the power LED (c) the USB port (d) the reset button
  20. 20.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  21. 21.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the pins (c) the power LED (d) the reset button
  22. 22.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  23. 23.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  24. 24.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  25. 25.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a wind-up toy (d) a digital alarm clock
  26. 26.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  27. 27.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  28. 28.True or false: a microcontroller runs one small program. (a) True (b) False
  29. 29.Which job is done by the power LED? (a) restarts the program (b) shows the board is on (c) brings power and code (d) keeps the voltage steady
  30. 30.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) restarts the program (c) shows the board is on (d) keeps the voltage steady
  31. 31.Which of these has no microcontroller inside? (a) a spinning top (b) a digital thermometer (c) a TV remote (d) a toy robot
  32. 32.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  33. 33.Which of these has no microcontroller inside? (a) a TV remote (b) a digital alarm clock (c) a washing machine (d) a candle
  34. 34.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  35. 35.True or false: a microcontroller runs many apps at once. (a) True (b) False
  36. 36.True or false: a laptop needs much more power. (a) True (b) False
  37. 37.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  38. 38.Which of these has no microcontroller inside? (a) a microwave oven (b) a washing machine (c) a TV remote (d) a hand pump
  39. 39.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a toy robot (d) a spinning top
  40. 40.Which job is done by the reset button? (a) shows the board is on (b) restarts the program (c) keeps the voltage steady (d) brings power and code

Answer key

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

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