← What is a microcontroller? lesson New set →

Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 464 · 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.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a plain wall switch (d) a washing machine
  2. 2.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  3. 3.True or false: a laptop needs much more power. (a) True (b) False
  4. 4.Which job is done by the USB port? (a) restarts the program (b) shows the board is on (c) brings power and code (d) connect sensors and LEDs
  5. 5.Which job is done by the voltage regulator? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) runs the program
  6. 6.Which job is done by the power LED? (a) restarts the program (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
  7. 7.Which of these has no microcontroller inside? (a) a hand pump (b) a digital alarm clock (c) a washing machine (d) a TV remote
  8. 8.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) a 230 V cable (d) USB or a 9 V battery
  9. 9.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  10. 10.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
  11. 11.Which of these has no microcontroller inside? (a) a plain wall switch (b) a toy robot (c) a digital alarm clock (d) a digital thermometer
  12. 12.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
  13. 13.Which of these has no microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a digital alarm clock (d) a TV remote
  14. 14.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
  15. 15.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  16. 16.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  17. 17.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
  18. 18.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it starts again (d) it stops forever
  19. 19.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
  20. 20.True or false: a laptop uses very little power. (a) False (b) True
  21. 21.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the voltage regulator (c) the USB port (d) the reset button
  22. 22.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the power LED (c) the pins (d) the reset button
  23. 23.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  24. 24.Which of these usually has a microcontroller inside? (a) a candle (b) a digital alarm clock (c) a hand pump (d) a bicycle bell
  25. 25.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  26. 26.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the pins (c) the voltage regulator (d) the reset button
  27. 27.True or false: a microcontroller needs much more power. (a) True (b) False
  28. 28.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  29. 29.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  30. 30.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the voltage regulator (c) the USB port (d) the power LED
  31. 31.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
  32. 32.Which job is done by the pins? (a) restarts the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) runs the program
  33. 33.True or false: a laptop has a built-in keyboard. (a) True (b) False
  34. 34.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  35. 35.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  36. 36.True or false: a microcontroller has no screen of its own. (a) True (b) False
  37. 37.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the reset button (c) the voltage regulator (d) the USB port
  38. 38.True or false: a microcontroller runs many apps at once. (a) True (b) False
  39. 39.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  40. 40.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a candle (d) a TV remote

Answer key

  1. a washing machine
  2. laptop
  3. True
  4. brings power and code
  5. keeps the voltage steady
  6. shows the board is on
  7. a hand pump
  8. USB or a 9 V battery
  9. No
  10. False
  11. a plain wall switch
  12. True
  13. a wind-up toy
  14. False
  15. microcontroller
  16. laptop
  17. False
  18. it starts again
  19. microcontroller
  20. False
  21. the voltage regulator
  22. the pins
  23. True
  24. a digital alarm clock
  25. Yes
  26. the reset button
  27. False
  28. True
  29. True
  30. the power LED
  31. True
  32. connect sensors and LEDs
  33. True
  34. microcontroller
  35. No
  36. True
  37. the USB port
  38. False
  39. Yes
  40. a TV remote

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids