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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 252 · 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.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  2. 2.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  3. 3.Which job is done by the power LED? (a) shows the board is on (b) runs the program (c) restarts the program (d) connect sensors and LEDs
  4. 4.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
  5. 5.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the main chip (d) the reset button
  6. 6.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the pins (c) the power LED (d) the reset button
  7. 7.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) drawn with a pen (d) uploaded over USB
  8. 8.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  9. 9.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  10. 10.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
  11. 11.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
  12. 12.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  13. 13.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a candle (d) a toy robot
  14. 14.True or false: a spinning top has no microcontroller inside. (a) True (b) False
  15. 15.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the power LED (d) the USB cable
  16. 16.Which of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a bicycle bell (d) a microwave oven
  17. 17.Which job is done by the USB port? (a) restarts the program (b) runs the program (c) connect sensors and LEDs (d) brings power and code
  18. 18.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  19. 19.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  20. 20.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a kind of bulb (d) a computer on one chip
  21. 21.Which job is done by the voltage regulator? (a) shows the board is on (b) runs the program (c) connect sensors and LEDs (d) keeps the voltage steady
  22. 22.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the pins (c) the power LED (d) the reset button
  23. 23.True or false: a candle has no microcontroller inside. (a) False (b) True
  24. 24.True or false: a microcontroller runs many apps at once. (a) False (b) True
  25. 25.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  26. 26.Which of these has no microcontroller inside? (a) a TV remote (b) a spinning top (c) a digital alarm clock (d) a toy robot
  27. 27.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the voltage regulator (c) the pins (d) the main chip
  28. 28.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the power LED (c) the reset button (d) the USB port
  29. 29.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  30. 30.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  31. 31.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a washing machine (c) a smart watch (d) a bicycle bell
  32. 32.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  33. 33.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a plain wall switch (d) a digital thermometer
  34. 34.🤖 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
  35. 35.Which job is done by the main chip? (a) restarts the program (b) brings power and code (c) keeps the voltage steady (d) runs the program
  36. 36.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a wall socket directly (c) bare mains wires (d) a 230 V cable
  37. 37.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  38. 38.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  39. 39.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  40. 40.Which job is done by the pins? (a) runs the program (b) brings power and code (c) connect sensors and LEDs (d) shows the board is on

Answer key

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

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