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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 297 · 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 shows the board is on? (a) the pins (b) the main chip (c) the voltage regulator (d) the power LED
  2. 2.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) the USB cable (d) flash memory
  3. 3.True or false: a microcontroller needs much more power. (a) True (b) False
  4. 4.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) it starts again (d) the board breaks
  5. 5.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  6. 6.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the power LED (c) the main chip (d) the voltage regulator
  7. 7.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  8. 8.True or false: a microcontroller uses very little power. (a) False (b) True
  9. 9.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) sent by sound (d) uploaded over USB
  11. 11.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  12. 12.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  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.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  16. 16.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  17. 17.Which of these has no microcontroller inside? (a) a plain wall switch (b) a toy robot (c) a digital thermometer (d) a smart watch
  18. 18.True or false: a laptop runs one small program. (a) True (b) False
  19. 19.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  20. 20.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a TV remote (c) a digital thermometer (d) a wind-up toy
  21. 21.Which job is done by the voltage regulator? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) shows the board is on
  22. 22.True or false: a laptop has no screen of its own. (a) True (b) False
  23. 23.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  24. 24.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a computer on one chip (d) a type of battery
  25. 25.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the reset button (c) the voltage regulator (d) the pins
  26. 26.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the USB port (c) the main chip (d) the reset button
  27. 27.Which job is done by the USB port? (a) keeps the voltage steady (b) brings power and code (c) runs the program (d) restarts the program
  28. 28.True or false: a microcontroller runs one small program. (a) False (b) True
  29. 29.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  30. 30.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  31. 31.Which of these has no microcontroller inside? (a) a toy robot (b) a washing machine (c) a smart watch (d) a hand pump
  32. 32.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  33. 33.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  34. 34.Which job is done by the power LED? (a) restarts the program (b) shows the board is on (c) keeps the voltage steady (d) connect sensors and LEDs
  35. 35.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  36. 36.Which of these has no microcontroller inside? (a) a microwave oven (b) a spinning top (c) a smart watch (d) a toy robot
  37. 37.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  38. 38.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) bare mains wires (d) a wall socket directly
  39. 39.Which job is done by the pins? (a) runs the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) restarts the program
  40. 40.Which of these has no microcontroller inside? (a) a bicycle bell (b) a washing machine (c) a toy robot (d) a digital thermometer

Answer key

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

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