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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 397 · 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 power LED? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) restarts the program
  2. 2.True or false: a laptop runs one small program. (a) True (b) False
  3. 3.Which job is done by the pins? (a) shows the board is on (b) runs the program (c) brings power and code (d) connect sensors and LEDs
  4. 4.True or false: a laptop has a built-in keyboard. (a) True (b) False
  5. 5.Which of these has no microcontroller inside? (a) a microwave oven (b) a smart watch (c) a digital alarm clock (d) a spinning top
  6. 6.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the USB port (c) the voltage regulator (d) the power LED
  7. 7.Which job is done by the USB port? (a) restarts the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) brings power and code
  8. 8.Which of these has no microcontroller inside? (a) a smart watch (b) a washing machine (c) a hand pump (d) a microwave oven
  9. 9.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  10. 10.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  11. 11.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  12. 12.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  13. 13.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  14. 14.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
  15. 15.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  16. 16.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  17. 17.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the main chip (c) the power LED (d) the voltage regulator
  18. 18.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  19. 19.True or false: a laptop needs much more power. (a) True (b) False
  20. 20.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  21. 21.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a plain wall switch (d) a digital thermometer
  22. 22.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a toy robot (c) a wind-up toy (d) a bicycle bell
  23. 23.Which job is done by the main chip? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) shows the board is on
  24. 24.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the reset button (c) the power LED (d) the pins
  25. 25.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
  26. 26.Which job is done by the reset button? (a) restarts the program (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
  27. 27.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) it deletes itself (d) the board breaks
  28. 28.True or false: a microcontroller runs many apps at once. (a) True (b) False
  29. 29.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  30. 30.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  31. 31.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  32. 32.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  33. 33.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  34. 34.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a type of battery (d) a computer on one chip
  35. 35.True or false: a smart watch has no microcontroller inside. (a) True (b) False
  36. 36.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the USB cable (c) flash memory (d) the power LED
  37. 37.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  38. 38.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the pins (c) the voltage regulator (d) the USB port
  39. 39.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) a wall socket directly (d) USB or a 9 V battery
  40. 40.Which job is done by the voltage regulator? (a) runs the program (b) restarts the program (c) keeps the voltage steady (d) connect sensors and LEDs

Answer key

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

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