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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 64 · 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.🤖 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
  2. 2.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  3. 3.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a toy robot (c) a bicycle bell (d) a spinning top
  4. 4.True or false: a microcontroller runs one small program. (a) True (b) False
  5. 5.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a candle (d) a wind-up toy
  6. 6.Which job is done by the power LED? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) shows the board is on
  7. 7.Which of these has no microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a microwave oven (d) a toy robot
  8. 8.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the main chip (c) the reset button (d) the USB port
  9. 9.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the main chip (c) the reset button (d) the voltage regulator
  10. 10.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) it deletes itself (d) the board breaks
  11. 11.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the power LED (c) the voltage regulator (d) the main chip
  12. 12.Which job is done by the USB port? (a) restarts the program (b) brings power and code (c) connect sensors and LEDs (d) runs the program
  13. 13.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a bicycle bell (d) a TV remote
  14. 14.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) USB or a 9 V battery (d) a wall socket directly
  15. 15.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  16. 16.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a hand pump (c) a wind-up toy (d) a smart watch
  17. 17.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  18. 18.True or false: a microcontroller has no screen of its own. (a) False (b) True
  19. 19.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  20. 20.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  21. 21.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  22. 22.Which of these usually has a microcontroller inside? (a) a candle (b) a digital thermometer (c) a spinning top (d) a hand pump
  23. 23.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  24. 24.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  25. 25.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  26. 26.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  27. 27.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  28. 28.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  29. 29.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  30. 30.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a wind-up toy (c) a washing machine (d) a microwave oven
  31. 31.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a kind of bulb (d) a computer on one chip
  32. 32.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  33. 33.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  34. 34.True or false: a laptop runs one small program. (a) True (b) False
  35. 35.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  36. 36.True or false: a laptop uses very little power. (a) True (b) False
  37. 37.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) uploaded over USB (d) typed on the chip
  38. 38.Which job is done by the main chip? (a) brings power and code (b) runs the program (c) keeps the voltage steady (d) shows the board is on
  39. 39.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  40. 40.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True

Answer key

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

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