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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 215 · 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.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  2. 2.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a wind-up toy (c) a washing machine (d) a spinning top
  3. 3.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  4. 4.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the voltage regulator (c) the main chip (d) the reset button
  5. 5.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  6. 6.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  7. 7.True or false: a laptop uses very little power. (a) True (b) False
  8. 8.True or false: a microcontroller has no screen of its own. (a) True (b) False
  9. 9.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) a wall socket directly (c) USB or a 9 V battery (d) bare mains wires
  10. 10.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  11. 11.True or false: a laptop runs one small program. (a) True (b) False
  12. 12.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  13. 13.Which of these has no microcontroller inside? (a) a microwave oven (b) a washing machine (c) a digital alarm clock (d) a wind-up toy
  14. 14.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  15. 15.Which job is done by the reset button? (a) runs the program (b) brings power and code (c) restarts the program (d) connect sensors and LEDs
  16. 16.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  17. 17.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  18. 18.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  19. 19.Which job is done by the USB port? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) connect sensors and LEDs
  20. 20.Which job is done by the main chip? (a) shows the board is on (b) connect sensors and LEDs (c) runs the program (d) restarts the program
  21. 21.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) drawn with a pen (c) sent by sound (d) typed on the chip
  22. 22.🤖 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
  23. 23.True or false: a laptop has no screen of its own. (a) False (b) True
  24. 24.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  25. 25.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) the power LED (d) flash memory
  26. 26.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it deletes itself (c) the board breaks (d) it starts again
  27. 27.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  28. 28.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  29. 29.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  30. 30.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  31. 31.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  32. 32.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  33. 33.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  34. 34.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  35. 35.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  36. 36.True or false: a laptop runs many apps at once. (a) True (b) False
  37. 37.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital thermometer (c) a bicycle bell (d) a toy robot
  38. 38.True or false: a laptop has a built-in keyboard. (a) False (b) True
  39. 39.Which of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a candle (d) a digital thermometer
  40. 40.Which of these has no microcontroller inside? (a) a toy robot (b) a digital thermometer (c) a washing machine (d) a spinning top

Answer key

  1. No
  2. a washing machine
  3. laptop
  4. the reset button
  5. laptop
  6. No
  7. False
  8. True
  9. USB or a 9 V battery
  10. True
  11. False
  12. True
  13. a wind-up toy
  14. laptop
  15. restarts the program
  16. Yes
  17. True
  18. False
  19. brings power and code
  20. runs the program
  21. uploaded over USB
  22. a computer on one chip
  23. False
  24. No
  25. flash memory
  26. it starts again
  27. No
  28. No
  29. False
  30. microcontroller
  31. True
  32. microcontroller
  33. False
  34. False
  35. True
  36. True
  37. a bicycle bell
  38. True
  39. a digital thermometer
  40. a spinning top

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