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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 22 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  2. 2.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  3. 3.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  4. 4.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  5. 5.🤖 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
  6. 6.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) flash memory (d) the resistor
  7. 7.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  8. 8.Which job is done by the power LED? (a) shows the board is on (b) keeps the voltage steady (c) brings power and code (d) connect sensors and LEDs
  9. 9.True or false: a microcontroller runs many apps at once. (a) True (b) False
  10. 10.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a big desktop computer (d) a computer on one chip
  11. 11.True or false: a laptop uses very little power. (a) True (b) False
  12. 12.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the voltage regulator (c) the main chip (d) the reset button
  13. 13.Which job is done by the voltage regulator? (a) restarts the program (b) runs the program (c) keeps the voltage steady (d) brings power and code
  14. 14.🤖 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
  15. 15.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  16. 16.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  17. 17.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  18. 18.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the pins (c) the reset button (d) the USB port
  19. 19.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  20. 20.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  21. 21.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a plain wall switch (c) a wind-up toy (d) a candle
  22. 22.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  23. 23.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the power LED (c) the pins (d) the main chip
  24. 24.Which job is done by the USB port? (a) shows the board is on (b) connect sensors and LEDs (c) runs the program (d) brings power and code
  25. 25.True or false: a candle has no microcontroller inside. (a) False (b) True
  26. 26.True or false: a laptop runs many apps at once. (a) True (b) False
  27. 27.Which of these has no microcontroller inside? (a) a TV remote (b) a smart watch (c) a digital alarm clock (d) a plain wall switch
  28. 28.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) uploaded over USB (d) drawn with a pen
  29. 29.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  30. 30.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  31. 31.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  32. 32.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the pins (c) the main chip (d) the voltage regulator
  33. 33.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  34. 34.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  35. 35.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a microwave oven (d) a candle
  36. 36.True or false: a laptop runs one small program. (a) False (b) True
  37. 37.Which job is done by the pins? (a) brings power and code (b) connect sensors and LEDs (c) keeps the voltage steady (d) runs the program
  38. 38.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  39. 39.Which of these usually has a microcontroller inside? (a) a toy robot (b) a bicycle bell (c) a hand pump (d) a candle
  40. 40.Which job is done by the main chip? (a) runs the program (b) shows the board is on (c) connect sensors and LEDs (d) restarts the program

Answer key

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

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