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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 679 · 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.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it starts again (d) it stops forever
  2. 2.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  3. 3.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) typed on the chip (d) uploaded over USB
  4. 4.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a spinning top (d) a toy robot
  5. 5.True or false: a microcontroller has no screen of its own. (a) False (b) True
  6. 6.Which of these has no microcontroller inside? (a) a plain wall switch (b) a digital alarm clock (c) a TV remote (d) a washing machine
  7. 7.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the USB cable (d) the resistor
  8. 8.True or false: a laptop has no screen of its own. (a) False (b) True
  9. 9.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  10. 10.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  11. 11.Which of these has no microcontroller inside? (a) a washing machine (b) a hand pump (c) a TV remote (d) a digital alarm clock
  12. 12.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
  13. 13.Which job is done by the power LED? (a) brings power and code (b) runs the program (c) shows the board is on (d) keeps the voltage steady
  14. 14.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a big desktop computer (d) a computer on one chip
  15. 15.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a plain wall switch (c) a spinning top (d) a candle
  16. 16.True or false: a hand pump has no microcontroller inside. (a) True (b) False
  17. 17.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a hand pump (c) a plain wall switch (d) a spinning top
  18. 18.Which job is done by the main chip? (a) restarts the program (b) brings power and code (c) runs the program (d) shows the board is on
  19. 19.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  20. 20.Which job is done by the voltage regulator? (a) shows the board is on (b) connect sensors and LEDs (c) brings power and code (d) keeps the voltage steady
  21. 21.Which of these has no microcontroller inside? (a) a candle (b) a toy robot (c) a washing machine (d) a digital alarm clock
  22. 22.Which of these usually has a microcontroller inside? (a) a washing machine (b) a wind-up toy (c) a spinning top (d) a bicycle bell
  23. 23.True or false: a microcontroller runs one small program. (a) False (b) True
  24. 24.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  25. 25.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  26. 26.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  27. 27.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  28. 28.True or false: a microcontroller runs many apps at once. (a) True (b) False
  29. 29.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the pins (c) the USB port (d) the reset button
  30. 30.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the pins (c) the reset button (d) the voltage regulator
  31. 31.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) USB or a 9 V battery (c) a wall socket directly (d) bare mains wires
  32. 32.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
  33. 33.Which job is done by the USB port? (a) restarts the program (b) shows the board is on (c) connect sensors and LEDs (d) brings power and code
  34. 34.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  35. 35.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  36. 36.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  37. 37.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  38. 38.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  39. 39.True or false: a laptop runs one small program. (a) False (b) True
  40. 40.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False

Answer key

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

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