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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 445 · 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 runs many apps at once. (a) False (b) True
  2. 2.🤖 Does a wind-up toy 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.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  5. 5.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a candle (d) a washing machine
  6. 6.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  7. 7.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
  8. 8.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the voltage regulator (c) the main chip (d) the reset button
  9. 9.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
  10. 10.True or false: a microcontroller needs much more power. (a) True (b) False
  11. 11.Which job is done by the power LED? (a) connect sensors and LEDs (b) shows the board is on (c) restarts the program (d) keeps the voltage steady
  12. 12.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  13. 13.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) flash memory (c) the USB cable (d) the power LED
  14. 14.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) the board breaks (c) it deletes itself (d) it stops forever
  15. 15.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) runs the program (c) keeps the voltage steady (d) brings power and code
  16. 16.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
  17. 17.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  18. 18.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
  19. 19.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a kind of bulb (d) a big desktop computer
  20. 20.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
  21. 21.Which job is done by the USB port? (a) restarts the program (b) shows the board is on (c) runs the program (d) brings power and code
  22. 22.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
  23. 23.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a candle (d) a plain wall switch
  24. 24.True or false: a laptop needs much more power. (a) False (b) True
  25. 25.Which of these has no microcontroller inside? (a) a spinning top (b) a washing machine (c) a smart watch (d) a TV remote
  26. 26.True or false: a microcontroller uses very little power. (a) True (b) False
  27. 27.True or false: a laptop runs one small program. (a) True (b) False
  28. 28.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  29. 29.Which of these usually has a microcontroller inside? (a) a TV remote (b) a candle (c) a plain wall switch (d) a bicycle bell
  30. 30.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) USB or a 9 V battery (d) a 230 V cable
  31. 31.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  32. 32.Which of these has no microcontroller inside? (a) a digital thermometer (b) a wind-up toy (c) a digital alarm clock (d) a washing machine
  33. 33.True or false: a candle has no microcontroller inside. (a) True (b) False
  34. 34.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
  35. 35.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
  36. 36.True or false: a laptop uses very little power. (a) False (b) True
  37. 37.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
  38. 38.Which of these usually has a microcontroller inside? (a) a toy robot (b) a candle (c) a wind-up toy (d) a spinning top
  39. 39.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the power LED (c) the pins (d) the reset button
  40. 40.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

Answer key

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

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