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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 200 · 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 of these has no microcontroller inside? (a) a toy robot (b) a washing machine (c) a candle (d) a TV remote
  2. 2.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  3. 3.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  4. 4.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it deletes itself (d) it starts again
  5. 5.Which job is done by the pins? (a) brings power and code (b) restarts the program (c) connect sensors and LEDs (d) keeps the voltage steady
  6. 6.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  7. 7.True or false: a laptop has a built-in keyboard. (a) True (b) False
  8. 8.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  9. 9.True or false: a laptop uses very little power. (a) False (b) True
  10. 10.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) flash memory (d) the resistor
  11. 11.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  12. 12.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a digital alarm clock (c) a hand pump (d) a bicycle bell
  13. 13.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a plain wall switch (d) a digital alarm clock
  14. 14.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  15. 15.True or false: a spinning top has no microcontroller inside. (a) False (b) True
  16. 16.True or false: a microcontroller runs many apps at once. (a) True (b) False
  17. 17.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a spinning top (c) a hand pump (d) a toy robot
  18. 18.True or false: a microcontroller needs much more power. (a) True (b) False
  19. 19.Which job is done by the power LED? (a) runs the program (b) brings power and code (c) shows the board is on (d) restarts the program
  20. 20.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  21. 21.True or false: a microcontroller runs one small program. (a) False (b) True
  22. 22.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a washing machine (d) a plain wall switch
  23. 23.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  24. 24.True or false: a microcontroller uses very little power. (a) False (b) True
  25. 25.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a type of battery (d) a computer on one chip
  26. 26.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a wind-up toy (d) a microwave oven
  27. 27.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the USB port (c) the voltage regulator (d) the power LED
  28. 28.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  29. 29.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the reset button (c) the USB port (d) the pins
  30. 30.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  31. 31.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the voltage regulator (c) the main chip (d) the pins
  32. 32.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
  33. 33.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  34. 34.True or false: a laptop runs one small program. (a) True (b) False
  35. 35.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) USB or a 9 V battery (d) a 230 V cable
  36. 36.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the reset button (c) the USB port (d) the power LED
  37. 37.Which job is done by the reset button? (a) runs the program (b) shows the board is on (c) restarts the program (d) connect sensors and LEDs
  38. 38.🤖 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
  39. 39.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  40. 40.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller

Answer key

  1. a candle
  2. Yes
  3. microcontroller
  4. it starts again
  5. connect sensors and LEDs
  6. Yes
  7. True
  8. laptop
  9. False
  10. flash memory
  11. keeps the voltage steady
  12. a digital alarm clock
  13. a plain wall switch
  14. True
  15. True
  16. False
  17. a toy robot
  18. False
  19. shows the board is on
  20. Yes
  21. True
  22. a washing machine
  23. microcontroller
  24. True
  25. a computer on one chip
  26. a microwave oven
  27. the reset button
  28. True
  29. the main chip
  30. Yes
  31. the pins
  32. True
  33. Yes
  34. False
  35. USB or a 9 V battery
  36. the power LED
  37. restarts the program
  38. uploaded over USB
  39. microcontroller
  40. laptop

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