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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 423 · 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.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  3. 3.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  4. 4.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it stops forever (d) it starts again
  5. 5.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) bare mains wires (d) a 230 V cable
  6. 6.Which job is done by the power LED? (a) restarts the program (b) connect sensors and LEDs (c) shows the board is on (d) brings power and code
  7. 7.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  8. 8.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  9. 9.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the reset button (c) the voltage regulator (d) the USB port
  11. 11.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a candle (d) a TV remote
  12. 12.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  13. 13.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  14. 14.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the resistor (d) the USB cable
  15. 15.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the main chip (c) the voltage regulator (d) the reset button
  16. 16.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) connect sensors and LEDs (c) shows the board is on (d) runs the program
  17. 17.Which job is done by the USB port? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) runs the program
  18. 18.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) sent by sound (c) drawn with a pen (d) typed on the chip
  19. 19.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a type of battery (d) a computer on one chip
  20. 20.True or false: a laptop runs one small program. (a) True (b) False
  21. 21.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the reset button (c) the pins (d) the power LED
  22. 22.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  23. 23.True or false: a TV remote has no microcontroller inside. (a) True (b) False
  24. 24.True or false: a microcontroller uses very little power. (a) False (b) True
  25. 25.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  26. 26.Which job is done by the pins? (a) connect sensors and LEDs (b) shows the board is on (c) keeps the voltage steady (d) runs the program
  27. 27.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  28. 28.Which of these usually has a microcontroller inside? (a) a washing machine (b) a candle (c) a wind-up toy (d) a spinning top
  29. 29.Which of these has no microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a TV remote (d) a washing machine
  30. 30.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a spinning top (c) a bicycle bell (d) a candle
  31. 31.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  32. 32.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the USB port (c) the power LED (d) the voltage regulator
  33. 33.True or false: a candle usually has a microcontroller inside. (a) True (b) False
  34. 34.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  35. 35.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  36. 36.True or false: a laptop uses very little power. (a) False (b) True
  37. 37.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the power LED (c) the USB port (d) the reset button
  38. 38.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  39. 39.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  40. 40.True or false: a microcontroller runs one small program. (a) False (b) True

Answer key

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

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