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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 302 · 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.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  2. 2.🤖 What is a microcontroller? (a) a kind of bulb (b) a type of battery (c) a big desktop computer (d) a computer on one chip
  3. 3.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a candle (d) a hand pump
  4. 4.Which job is done by the reset button? (a) runs the program (b) restarts the program (c) keeps the voltage steady (d) brings power and code
  5. 5.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  6. 6.Which job is done by the main chip? (a) runs the program (b) connect sensors and LEDs (c) restarts the program (d) keeps the voltage steady
  7. 7.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) typed on the chip (d) uploaded over USB
  8. 8.True or false: a laptop has no screen of its own. (a) False (b) True
  9. 9.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  10. 10.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it stops forever (d) it starts again
  11. 11.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the pins (c) the voltage regulator (d) the reset button
  12. 12.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
  13. 13.Which job is done by the voltage regulator? (a) restarts the program (b) brings power and code (c) keeps the voltage steady (d) connect sensors and LEDs
  14. 14.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  15. 15.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the USB port (c) the reset button (d) the voltage regulator
  16. 16.True or false: a laptop runs many apps at once. (a) False (b) True
  17. 17.Which of these has no microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a washing machine (d) a digital thermometer
  18. 18.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a wall socket directly (d) a 230 V cable
  19. 19.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  20. 20.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  21. 21.Which job is done by the power LED? (a) keeps the voltage steady (b) shows the board is on (c) brings power and code (d) runs the program
  22. 22.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the voltage regulator (c) the pins (d) the reset button
  23. 23.True or false: a laptop needs much more power. (a) True (b) False
  24. 24.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  25. 25.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  26. 26.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a washing machine (d) a wind-up toy
  27. 27.Which job is done by the USB port? (a) connect sensors and LEDs (b) restarts the program (c) brings power and code (d) shows the board is on
  28. 28.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
  29. 29.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
  30. 30.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  31. 31.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the USB cable (c) the power LED (d) flash memory
  32. 32.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  33. 33.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  34. 34.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  35. 35.Which job is done by the pins? (a) shows the board is on (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
  36. 36.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a wind-up toy (c) a hand pump (d) a candle
  37. 37.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  38. 38.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  39. 39.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the main chip (c) the reset button (d) the voltage regulator
  40. 40.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True

Answer key

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

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