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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 614 · 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 toy robot has no microcontroller inside. (a) False (b) True
  2. 2.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) the power LED (d) flash memory
  3. 3.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  4. 4.True or false: a microcontroller runs many apps at once. (a) False (b) True
  5. 5.Which job is done by the USB port? (a) runs the program (b) keeps the voltage steady (c) restarts the program (d) brings power and code
  6. 6.Which job is done by the pins? (a) restarts the program (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  7. 7.Which of these has no microcontroller inside? (a) a TV remote (b) a toy robot (c) a wind-up toy (d) a washing machine
  8. 8.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  9. 9.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  10. 10.True or false: a laptop needs much more power. (a) False (b) True
  11. 11.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the power LED (c) the reset button (d) the USB port
  12. 12.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  13. 13.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the USB port (c) the reset button (d) the main chip
  14. 14.True or false: a microcontroller needs much more power. (a) True (b) False
  15. 15.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the power LED (c) the reset button (d) the pins
  16. 16.Which job is done by the reset button? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) shows the board is on
  17. 17.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the pins (c) the main chip (d) the voltage regulator
  18. 18.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a bicycle bell (d) a smart watch
  19. 19.True or false: a laptop has no screen of its own. (a) True (b) False
  20. 20.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  21. 21.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  22. 22.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  23. 23.Which of these usually has a microcontroller inside? (a) a candle (b) a digital alarm clock (c) a bicycle bell (d) a hand pump
  24. 24.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) drawn with a pen (d) sent by sound
  25. 25.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  26. 26.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  27. 27.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  28. 28.True or false: a laptop runs one small program. (a) True (b) False
  29. 29.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the USB port (c) the reset button (d) the voltage regulator
  30. 30.True or false: a microcontroller uses very little power. (a) True (b) False
  31. 31.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  32. 32.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  33. 33.True or false: a laptop uses very little power. (a) True (b) False
  34. 34.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) connect sensors and LEDs (c) restarts the program (d) shows the board is on
  35. 35.Which job is done by the power LED? (a) runs the program (b) shows the board is on (c) restarts the program (d) connect sensors and LEDs
  36. 36.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) the board breaks (d) it stops forever
  37. 37.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  38. 38.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  39. 39.Which of these has no microcontroller inside? (a) a candle (b) a smart watch (c) a washing machine (d) a microwave oven
  40. 40.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a kind of bulb (d) a big desktop computer

Answer key

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

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