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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 551 · 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.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  2. 2.Which of these usually has a microcontroller inside? (a) a candle (b) a toy robot (c) a bicycle bell (d) a spinning top
  3. 3.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  4. 4.🤖 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
  5. 5.Which job is done by the USB port? (a) connect sensors and LEDs (b) keeps the voltage steady (c) brings power and code (d) restarts the program
  6. 6.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  7. 7.Which job is done by the reset button? (a) shows the board is on (b) brings power and code (c) restarts the program (d) runs the program
  8. 8.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  9. 9.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  10. 10.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a digital alarm clock (d) a candle
  11. 11.True or false: a laptop runs many apps at once. (a) True (b) False
  12. 12.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the pins (c) the USB port (d) the power LED
  13. 13.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  14. 14.Which of these has no microcontroller inside? (a) a toy robot (b) a washing machine (c) a digital alarm clock (d) a bicycle bell
  15. 15.True or false: a microcontroller uses very little power. (a) False (b) True
  16. 16.Which job is done by the power LED? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) connect sensors and LEDs
  17. 17.🤖 What is a microcontroller? (a) a kind of bulb (b) a computer on one chip (c) a type of battery (d) a big desktop computer
  18. 18.Which job is done by the main chip? (a) runs the program (b) connect sensors and LEDs (c) restarts the program (d) brings power and code
  19. 19.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  20. 20.True or false: a microcontroller has no screen of its own. (a) True (b) False
  21. 21.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the reset button (c) the USB port (d) the voltage regulator
  22. 22.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the voltage regulator (c) the main chip (d) the pins
  23. 23.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  24. 24.True or false: a microcontroller runs many apps at once. (a) False (b) True
  25. 25.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a microwave oven (d) a hand pump
  26. 26.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  27. 27.Which job is done by the voltage regulator? (a) runs the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) restarts the program
  28. 28.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  29. 29.True or false: a laptop has a built-in keyboard. (a) True (b) False
  30. 30.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the power LED (c) the reset button (d) the USB port
  31. 31.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
  32. 32.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
  33. 33.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the USB port (c) the main chip (d) the voltage regulator
  34. 34.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the resistor (d) the power LED
  35. 35.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) the board breaks (d) it stops forever
  36. 36.Which of these usually has a microcontroller inside? (a) a candle (b) a bicycle bell (c) a wind-up toy (d) a TV remote
  37. 37.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) sent by sound (c) drawn with a pen (d) typed on the chip
  38. 38.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  39. 39.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  40. 40.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No

Answer key

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

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