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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 654 · 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 of these has no microcontroller inside? (a) a washing machine (b) a plain wall switch (c) a digital alarm clock (d) a digital thermometer
  2. 2.🤖 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
  3. 3.🤖 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
  4. 4.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
  5. 5.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  6. 6.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  7. 7.True or false: a laptop has a built-in keyboard. (a) False (b) True
  8. 8.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital alarm clock (c) a smart watch (d) a wind-up toy
  9. 9.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  10. 10.True or false: a microcontroller has no screen of its own. (a) False (b) True
  11. 11.True or false: a laptop needs much more power. (a) True (b) False
  12. 12.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  13. 13.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) the board breaks (d) it deletes itself
  14. 14.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  15. 15.True or false: a microcontroller runs many apps at once. (a) True (b) False
  16. 16.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  17. 17.Which of these has no microcontroller inside? (a) a washing machine (b) a candle (c) a microwave oven (d) a digital thermometer
  18. 18.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the reset button (c) the voltage regulator (d) the pins
  19. 19.Which job is done by the USB port? (a) connect sensors and LEDs (b) brings power and code (c) runs the program (d) shows the board is on
  20. 20.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a smart watch (d) a wind-up toy
  21. 21.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  22. 22.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  23. 23.Which job is done by the reset button? (a) shows the board is on (b) restarts the program (c) brings power and code (d) connect sensors and LEDs
  24. 24.Which job is done by the main chip? (a) runs the program (b) restarts the program (c) shows the board is on (d) brings power and code
  25. 25.Which job is done by the pins? (a) restarts the program (b) runs the program (c) connect sensors and LEDs (d) brings power and code
  26. 26.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  27. 27.Which of these has no microcontroller inside? (a) a washing machine (b) a bicycle bell (c) a microwave oven (d) a toy robot
  28. 28.True or false: a microcontroller runs one small program. (a) False (b) True
  29. 29.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  30. 30.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a spinning top (d) a digital alarm clock
  31. 31.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a digital alarm clock (d) a plain wall switch
  32. 32.🤖 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
  33. 33.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) shows the board is on (c) keeps the voltage steady (d) runs the program
  34. 34.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the voltage regulator (c) the USB port (d) the pins
  35. 35.True or false: a laptop runs many apps at once. (a) False (b) True
  36. 36.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  37. 37.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  38. 38.True or false: a microcontroller uses very little power. (a) False (b) True
  39. 39.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  40. 40.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller

Answer key

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

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