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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 247 · 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.

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

Answer key

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

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