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Electronics Worksheet: What Is a Microcontroller

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

Answer key

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

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