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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 347 · 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 usually has a microcontroller inside? (a) a spinning top (b) a digital thermometer (c) a plain wall switch (d) a hand pump
  2. 2.True or false: a microcontroller uses very little power. (a) False (b) True
  3. 3.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the pins (c) the main chip (d) the power LED
  4. 4.Which job is done by the USB port? (a) restarts the program (b) connect sensors and LEDs (c) shows the board is on (d) brings power and code
  5. 5.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a computer on one chip (d) a type of battery
  6. 6.True or false: a microcontroller has no screen of its own. (a) False (b) True
  7. 7.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  8. 8.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a plain wall switch (d) a digital alarm clock
  9. 9.True or false: a microcontroller runs one small program. (a) True (b) False
  10. 10.Which of these usually has a microcontroller inside? (a) a hand pump (b) a bicycle bell (c) a microwave oven (d) a candle
  11. 11.True or false: a laptop runs one small program. (a) False (b) True
  12. 12.Which of these has no microcontroller inside? (a) a digital thermometer (b) a plain wall switch (c) a smart watch (d) a microwave oven
  13. 13.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  14. 14.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  15. 15.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it deletes itself (c) the board breaks (d) it starts again
  16. 16.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  17. 17.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  18. 18.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  19. 19.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the main chip (c) the USB port (d) the reset button
  20. 20.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  21. 21.Which job is done by the main chip? (a) restarts the program (b) runs the program (c) shows the board is on (d) keeps the voltage steady
  22. 22.Which job is done by the power LED? (a) shows the board is on (b) keeps the voltage steady (c) restarts the program (d) brings power and code
  23. 23.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  24. 24.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a spinning top (d) a TV remote
  25. 25.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  26. 26.Which job is done by the voltage regulator? (a) runs the program (b) shows the board is on (c) keeps the voltage steady (d) restarts the program
  27. 27.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  28. 28.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the main chip (c) the power LED (d) the voltage regulator
  29. 29.True or false: a microcontroller needs much more power. (a) False (b) True
  30. 30.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the pins (c) the USB port (d) the reset button
  31. 31.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  32. 32.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  33. 33.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) typed on the chip (c) uploaded over USB (d) drawn with a pen
  34. 34.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) a 230 V cable (d) bare mains wires
  35. 35.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  36. 36.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a TV remote (c) a washing machine (d) a spinning top
  37. 37.🤖 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
  38. 38.True or false: a laptop needs much more power. (a) False (b) True
  39. 39.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  40. 40.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop

Answer key

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

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