Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 482 · 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 restarts the program? (a) the main chip (b) the pins (c) the voltage regulator (d) the reset button
2. 2.Which job is done by the main chip? (a) brings power and code (b) connect sensors and LEDs (c) runs the program (d) keeps the voltage steady
3. 3.Which of these has no microcontroller inside? (a) a toy robot (b) a TV remote (c) a bicycle bell (d) a microwave oven
4. 4.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
5. 5.Which of these has no microcontroller inside? (a) a wind-up toy (b) a washing machine (c) a toy robot (d) a microwave oven
6. 6.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it starts again (d) it deletes itself
7. 7.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the USB cable (d) the power LED
8. 8.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
9. 9.True or false: a microcontroller runs one small program. (a) False (b) True
10. 10.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
11. 11.Which job is done by the USB port? (a) runs the program (b) brings power and code (c) restarts the program (d) keeps the voltage steady
12. 12.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a hand pump (d) a smart watch
13. 13.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
14. 14.True or false: a hand pump has no microcontroller inside. (a) False (b) True
15. 15.Which job is done by the reset button? (a) connect sensors and LEDs (b) restarts the program (c) keeps the voltage steady (d) runs the program
16. 16.True or false: a microcontroller runs many apps at once. (a) False (b) True
17. 17.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
18. 18.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a computer on one chip (d) a type of battery
19. 19.True or false: a laptop has no screen of its own. (a) False (b) True
20. 20.True or false: a laptop uses very little power. (a) False (b) True
21. 21.Which of these usually has a microcontroller inside? (a) a spinning top (b) a digital thermometer (c) a bicycle bell (d) a hand pump
22. 22.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a wind-up toy (d) a spinning top
23. 23.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a spinning top (c) a wind-up toy (d) a candle
24. 24.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the voltage regulator (c) the USB port (d) the pins
25. 25.True or false: a laptop runs one small program. (a) True (b) False
26. 26.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
27. 27.Which job is done by the pins? (a) keeps the voltage steady (b) connect sensors and LEDs (c) runs the program (d) brings power and code
28. 28.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
29. 29.True or false: a laptop needs much more power. (a) False (b) True
30. 30.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) USB or a 9 V battery (c) a wall socket directly (d) bare mains wires
31. 31.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the pins (c) the voltage regulator (d) the USB port
32. 32.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the main chip (c) the voltage regulator (d) the pins
33. 33.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
34. 34.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
35. 35.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
36. 36.Which job is done by the power LED? (a) runs the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) shows the board is on
37. 37.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) drawn with a pen (d) sent by sound
38. 38.Which of these usually has a microcontroller inside? (a) a hand pump (b) a TV remote (c) a candle (d) a bicycle bell
39. 39.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a toy robot (d) a wind-up toy
40. 40.True or false: a laptop runs many apps at once. (a) False (b) True

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