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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 624 · 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 main chip? (a) keeps the voltage steady (b) shows the board is on (c) runs the program (d) brings power and code
  2. 2.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  3. 3.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  4. 4.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  5. 5.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital alarm clock (c) a toy robot (d) a plain wall switch
  6. 6.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  7. 7.True or false: a microcontroller runs many apps at once. (a) True (b) False
  8. 8.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  9. 9.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  10. 10.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the reset button (c) the power LED (d) the pins
  11. 11.True or false: a laptop has no screen of its own. (a) False (b) True
  12. 12.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the USB port (c) the power LED (d) the main chip
  13. 13.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) connect sensors and LEDs
  14. 14.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  15. 15.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  16. 16.Which job is done by the reset button? (a) keeps the voltage steady (b) brings power and code (c) restarts the program (d) runs the program
  17. 17.True or false: a laptop uses very little power. (a) False (b) True
  18. 18.🤖 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
  19. 19.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a 230 V cable (d) a wall socket directly
  20. 20.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
  21. 21.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  22. 22.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  23. 23.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a toy robot (d) a spinning top
  24. 24.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  25. 25.True or false: a microcontroller has no screen of its own. (a) False (b) True
  26. 26.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the main chip (c) the pins (d) the USB port
  27. 27.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) uploaded over USB (d) drawn with a pen
  28. 28.True or false: a microcontroller runs one small program. (a) False (b) True
  29. 29.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the main chip (c) the pins (d) the voltage regulator
  30. 30.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  31. 31.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  32. 32.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  33. 33.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it deletes itself (c) the board breaks (d) it starts again
  34. 34.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the USB cable (d) the power LED
  35. 35.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  36. 36.True or false: a laptop runs many apps at once. (a) False (b) True
  37. 37.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a microwave oven (d) a wind-up toy
  38. 38.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  39. 39.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) connect sensors and LEDs (c) runs the program (d) restarts the program
  40. 40.Which job is done by the pins? (a) runs the program (b) connect sensors and LEDs (c) brings power and code (d) restarts the program

Answer key

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

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