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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 598 · 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 usually has a microcontroller inside? (a) a spinning top (b) a hand pump (c) a plain wall switch (d) a microwave oven
  2. 2.True or false: a laptop has a built-in keyboard. (a) True (b) False
  3. 3.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  4. 4.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) a wall socket directly (d) USB or a 9 V battery
  5. 5.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
  6. 6.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the USB cable (c) the power LED (d) the resistor
  7. 7.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  8. 8.True or false: a laptop has no screen of its own. (a) True (b) False
  9. 9.Which job is done by the power LED? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) connect sensors and LEDs
  10. 10.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  11. 11.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  12. 12.Which job is done by the pins? (a) brings power and code (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  13. 13.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  14. 14.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) restarts the program (c) shows the board is on (d) keeps the voltage steady
  15. 15.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) the board breaks (d) it starts again
  16. 16.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the reset button (c) the power LED (d) the pins
  17. 17.True or false: a TV remote has no microcontroller inside. (a) False (b) True
  18. 18.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  19. 19.Which of these has no microcontroller inside? (a) a bicycle bell (b) a washing machine (c) a digital alarm clock (d) a smart watch
  20. 20.🤖 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
  21. 21.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  22. 22.Which job is done by the main chip? (a) connect sensors and LEDs (b) keeps the voltage steady (c) brings power and code (d) runs the program
  23. 23.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  24. 24.Which job is done by the reset button? (a) restarts the program (b) runs the program (c) keeps the voltage steady (d) brings power and code
  25. 25.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
  26. 26.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
  27. 27.True or false: a microcontroller has no screen of its own. (a) True (b) False
  28. 28.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  29. 29.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
  30. 30.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  31. 31.True or false: a microcontroller runs one small program. (a) False (b) True
  32. 32.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the USB port (c) the pins (d) the power LED
  33. 33.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the voltage regulator (c) the power LED (d) the reset button
  34. 34.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
  35. 35.Which of these usually has a microcontroller inside? (a) a hand pump (b) a TV remote (c) a candle (d) a wind-up toy
  36. 36.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  37. 37.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the USB port (c) the reset button (d) the main chip
  38. 38.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  39. 39.Which of these has no microcontroller inside? (a) a TV remote (b) a toy robot (c) a smart watch (d) a wind-up toy
  40. 40.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller

Answer key

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

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