Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 345 · 40 questions

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.

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

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