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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 435 · 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 job is done by the voltage regulator? (a) restarts the program (b) brings power and code (c) shows the board is on (d) keeps the voltage steady
  2. 2.Which of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a bicycle bell (d) a TV remote
  3. 3.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  4. 4.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a hand pump (d) a smart watch
  5. 5.Which of these has no microcontroller inside? (a) a digital thermometer (b) a digital alarm clock (c) a spinning top (d) a TV remote
  6. 6.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the voltage regulator (c) the main chip (d) the power LED
  7. 7.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the main chip (d) the power LED
  8. 8.True or false: a laptop runs many apps at once. (a) False (b) True
  9. 9.🤖 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
  10. 10.True or false: a laptop needs much more power. (a) True (b) False
  11. 11.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  12. 12.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the main chip (c) the reset button (d) the pins
  13. 13.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  14. 14.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
  15. 15.Which of these usually has a microcontroller inside? (a) a hand pump (b) a bicycle bell (c) a wind-up toy (d) a digital alarm clock
  16. 16.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the USB port (c) the voltage regulator (d) the reset button
  17. 17.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a candle (d) a washing machine
  18. 18.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  19. 19.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  20. 20.Which job is done by the power LED? (a) keeps the voltage steady (b) shows the board is on (c) runs the program (d) restarts the program
  21. 21.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  22. 22.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  23. 23.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  24. 24.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  25. 25.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  26. 26.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a kind of bulb (d) a computer on one chip
  27. 27.Which job is done by the pins? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) connect sensors and LEDs
  28. 28.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  29. 29.True or false: a microcontroller needs much more power. (a) False (b) True
  30. 30.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  31. 31.Which job is done by the USB port? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
  32. 32.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the USB port (c) the pins (d) the reset button
  33. 33.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) typed on the chip (d) drawn with a pen
  34. 34.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) it starts again (d) the board breaks
  35. 35.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  36. 36.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  37. 37.True or false: a microcontroller runs many apps at once. (a) True (b) False
  38. 38.Which of these has no microcontroller inside? (a) a bicycle bell (b) a digital alarm clock (c) a washing machine (d) a TV remote
  39. 39.True or false: a laptop uses very little power. (a) False (b) True
  40. 40.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a microwave oven (d) a wind-up toy

Answer key

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

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