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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 87 · 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.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  2. 2.True or false: a laptop has no screen of its own. (a) True (b) False
  3. 3.Which of these has no microcontroller inside? (a) a smart watch (b) a wind-up toy (c) a washing machine (d) a toy robot
  4. 4.🤖 What is a microcontroller? (a) a big desktop computer (b) a computer on one chip (c) a kind of bulb (d) a type of battery
  5. 5.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a spinning top (c) a candle (d) a washing machine
  6. 6.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) drawn with a pen (d) typed on the chip
  7. 7.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the power LED (c) the pins (d) the USB port
  8. 8.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  9. 9.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  10. 10.Which of these has no microcontroller inside? (a) a smart watch (b) a microwave oven (c) a washing machine (d) a spinning top
  11. 11.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the USB cable (c) the power LED (d) the resistor
  12. 12.Which job is done by the reset button? (a) runs the program (b) restarts the program (c) brings power and code (d) connect sensors and LEDs
  13. 13.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  14. 14.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) keeps the voltage steady (c) brings power and code (d) runs the program
  15. 15.Which of these has no microcontroller inside? (a) a smart watch (b) a digital thermometer (c) a bicycle bell (d) a toy robot
  16. 16.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a bicycle bell (d) a digital thermometer
  17. 17.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  18. 18.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it stops forever (d) it starts again
  19. 19.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  20. 20.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the power LED (c) the reset button (d) the voltage regulator
  21. 21.True or false: a spinning top has no microcontroller inside. (a) True (b) False
  22. 22.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the reset button (c) the pins (d) the power LED
  23. 23.Which job is done by the USB port? (a) runs the program (b) shows the board is on (c) brings power and code (d) restarts the program
  24. 24.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  25. 25.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a hand pump (c) a TV remote (d) a candle
  26. 26.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  27. 27.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  28. 28.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  29. 29.Which job is done by the main chip? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) shows the board is on
  30. 30.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  31. 31.True or false: a laptop runs one small program. (a) False (b) True
  32. 32.True or false: a laptop uses very little power. (a) True (b) False
  33. 33.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  34. 34.True or false: a candle has no microcontroller inside. (a) True (b) False
  35. 35.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  36. 36.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  37. 37.Which job is done by the pins? (a) restarts the program (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  38. 38.True or false: a microcontroller runs many apps at once. (a) True (b) False
  39. 39.True or false: a microcontroller uses very little power. (a) False (b) True
  40. 40.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the power LED (c) the main chip (d) the reset button

Answer key

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

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