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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 400 · 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.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) uploaded over USB (c) drawn with a pen (d) typed on the chip
  2. 2.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  3. 3.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a computer on one chip (d) a big desktop computer
  4. 4.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a bicycle bell (d) a spinning top
  5. 5.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  6. 6.True or false: a laptop uses very little power. (a) True (b) False
  7. 7.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  8. 8.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) the USB cable (d) flash memory
  9. 9.True or false: a laptop runs many apps at once. (a) False (b) True
  10. 10.True or false: a laptop needs much more power. (a) False (b) True
  11. 11.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a smart watch (d) a hand pump
  12. 12.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the voltage regulator (c) the main chip (d) the pins
  13. 13.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  14. 14.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  15. 15.Which job is done by the reset button? (a) connect sensors and LEDs (b) restarts the program (c) keeps the voltage steady (d) brings power and code
  16. 16.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  17. 17.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  18. 18.Which job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) shows the board is on (d) restarts the program
  19. 19.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the power LED (c) the main chip (d) the USB port
  20. 20.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the reset button (c) the voltage regulator (d) the USB port
  21. 21.Which of these has no microcontroller inside? (a) a toy robot (b) a digital alarm clock (c) a microwave oven (d) a hand pump
  22. 22.Which job is done by the USB port? (a) shows the board is on (b) keeps the voltage steady (c) brings power and code (d) connect sensors and LEDs
  23. 23.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it deletes itself (d) it starts again
  24. 24.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  25. 25.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  26. 26.Which job is done by the voltage regulator? (a) runs the program (b) brings power and code (c) shows the board is on (d) keeps the voltage steady
  27. 27.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  28. 28.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the power LED (d) the reset button
  29. 29.Which of these has no microcontroller inside? (a) a spinning top (b) a digital alarm clock (c) a washing machine (d) a toy robot
  30. 30.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) USB or a 9 V battery (d) bare mains wires
  31. 31.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  32. 32.True or false: a laptop runs one small program. (a) False (b) True
  33. 33.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  34. 34.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a wind-up toy (c) a digital thermometer (d) a TV remote
  35. 35.True or false: a microcontroller uses very little power. (a) True (b) False
  36. 36.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  37. 37.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
  38. 38.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  39. 39.True or false: a laptop has a built-in keyboard. (a) False (b) True
  40. 40.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No

Answer key

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

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