Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 748 · 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 part of a microcontroller board brings power and code? (a) the main chip (b) the pins (c) the reset button (d) the USB port
2. 2.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
3. 3.Which of these has no microcontroller inside? (a) a washing machine (b) a digital alarm clock (c) a TV remote (d) a spinning top
4. 4.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a digital alarm clock (d) a wind-up toy
5. 5.True or false: a microcontroller runs one small program. (a) True (b) False
6. 6.🤖 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
7. 7.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the USB port (c) the voltage regulator (d) the reset button
8. 8.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
9. 9.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
10. 10.🤖 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
11. 11.Which job is done by the main chip? (a) shows the board is on (b) restarts the program (c) runs the program (d) brings power and code
12. 12.True or false: a microcontroller has no screen of its own. (a) False (b) True
13. 13.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
14. 14.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) a wall socket directly (c) USB or a 9 V battery (d) bare mains wires
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.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
17. 17.Which of these has no microcontroller inside? (a) a hand pump (b) a smart watch (c) a washing machine (d) a toy robot
18. 18.Which job is done by the reset button? (a) runs the program (b) restarts the program (c) keeps the voltage steady (d) connect sensors and LEDs
19. 19.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
20. 20.True or false: a toy robot has no microcontroller inside. (a) True (b) False
21. 21.Which of these has no microcontroller inside? (a) a TV remote (b) a toy robot (c) a digital alarm clock (d) a wind-up toy
22. 22.True or false: a laptop runs many apps at once. (a) False (b) True
23. 23.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the voltage regulator (c) the power LED (d) the USB port
24. 24.True or false: a microcontroller runs many apps at once. (a) False (b) True
25. 25.Which of these has no microcontroller inside? (a) a digital thermometer (b) a TV remote (c) a microwave oven (d) a candle
26. 26.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
27. 27.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a TV remote (c) a plain wall switch (d) a spinning top
28. 28.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
29. 29.Which job is done by the pins? (a) restarts the program (b) connect sensors and LEDs (c) shows the board is on (d) runs the program
30. 30.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a plain wall switch (d) a candle
31. 31.Which job is done by the USB port? (a) keeps the voltage steady (b) shows the board is on (c) brings power and code (d) connect sensors and LEDs
32. 32.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
33. 33.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
34. 34.True or false: a hand pump has no microcontroller inside. (a) True (b) False
35. 35.True or false: a laptop uses very little power. (a) True (b) False
36. 36.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
37. 37.True or false: a laptop has a built-in keyboard. (a) True (b) False
38. 38.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the USB port (c) the reset button (d) the power LED
39. 39.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
40. 40.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the power LED (c) the main chip (d) the reset button

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