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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 303 · 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.

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

Answer key

  1. laptop
  2. True
  3. a computer on one chip
  4. False
  5. flash memory
  6. shows the board is on
  7. False
  8. No
  9. it starts again
  10. a plain wall switch
  11. microcontroller
  12. Yes
  13. No
  14. the power LED
  15. connect sensors and LEDs
  16. Yes
  17. a toy robot
  18. uploaded over USB
  19. False
  20. a smart watch
  21. microcontroller
  22. False
  23. laptop
  24. True
  25. a microwave oven
  26. USB or a 9 V battery
  27. False
  28. the USB port
  29. the pins
  30. a hand pump
  31. True
  32. False
  33. False
  34. True
  35. False
  36. No
  37. keeps the voltage steady
  38. a candle
  39. runs the program
  40. a spinning top

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