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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 109 · 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 main chip (c) the pins (d) the USB port
  2. 2.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  3. 3.Which job is done by the pins? (a) runs the program (b) brings power and code (c) connect sensors and LEDs (d) shows the board is on
  4. 4.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  5. 5.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the power LED (c) the reset button (d) the pins
  6. 6.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  7. 7.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the reset button (c) the power LED (d) the voltage regulator
  8. 8.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the USB port (c) the pins (d) the main chip
  9. 9.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) it deletes itself (d) the board breaks
  10. 10.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  11. 11.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) USB or a 9 V battery (c) bare mains wires (d) a wall socket directly
  12. 12.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  13. 13.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  14. 14.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  15. 15.Which job is done by the voltage regulator? (a) shows the board is on (b) restarts the program (c) keeps the voltage steady (d) brings power and code
  16. 16.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  17. 17.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  18. 18.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  19. 19.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a plain wall switch (d) a washing machine
  20. 20.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a digital alarm clock (d) a hand pump
  21. 21.Which of these has no microcontroller inside? (a) a smart watch (b) a wind-up toy (c) a digital thermometer (d) a microwave oven
  22. 22.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  23. 23.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  24. 24.Which of these has no microcontroller inside? (a) a washing machine (b) a bicycle bell (c) a digital alarm clock (d) a microwave oven
  25. 25.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) flash memory (d) the USB cable
  26. 26.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) sent by sound (d) typed on the chip
  27. 27.True or false: a microcontroller runs one small program. (a) False (b) True
  28. 28.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  29. 29.True or false: a laptop needs much more power. (a) True (b) False
  30. 30.Which of these has no microcontroller inside? (a) a toy robot (b) a digital alarm clock (c) a candle (d) a TV remote
  31. 31.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a computer on one chip (d) a kind of bulb
  32. 32.Which job is done by the power LED? (a) restarts the program (b) connect sensors and LEDs (c) shows the board is on (d) brings power and code
  33. 33.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  34. 34.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  35. 35.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  36. 36.Which job is done by the main chip? (a) runs the program (b) shows the board is on (c) keeps the voltage steady (d) connect sensors and LEDs
  37. 37.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  38. 38.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  39. 39.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  40. 40.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a smart watch (c) a spinning top (d) a plain wall switch

Answer key

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

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