Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 507 · 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.🤖 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
2. 2.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a wall socket directly (d) a 230 V cable
3. 3.🤖 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
4. 4.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) drawn with a pen (c) sent by sound (d) typed on the chip
5. 5.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
6. 6.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the pins (c) the reset button (d) the main chip
7. 7.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
8. 8.Which job is done by the voltage regulator? (a) runs the program (b) brings power and code (c) restarts the program (d) keeps the voltage steady
9. 9.True or false: a microcontroller runs one small program. (a) False (b) True
10. 10.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the USB port (c) the power LED (d) the reset button
11. 11.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
12. 12.True or false: a laptop runs many apps at once. (a) False (b) True
13. 13.Which job is done by the pins? (a) runs the program (b) connect sensors and LEDs (c) brings power and code (d) shows the board is on
14. 14.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
15. 15.Which job is done by the reset button? (a) keeps the voltage steady (b) restarts the program (c) runs the program (d) brings power and code
16. 16.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
17. 17.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the main chip (c) the power LED (d) the reset button
18. 18.True or false: a laptop needs much more power. (a) False (b) True
19. 19.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
20. 20.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
21. 21.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a type of battery (d) a computer on one chip
22. 22.Which job is done by the USB port? (a) connect sensors and LEDs (b) brings power and code (c) keeps the voltage steady (d) restarts the program
23. 23.Which of these usually has a microcontroller inside? (a) a hand pump (b) a bicycle bell (c) a washing machine (d) a spinning top
24. 24.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the USB port (c) the reset button (d) the power LED
25. 25.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the pins (c) the power LED (d) the USB port
26. 26.True or false: a microcontroller runs many apps at once. (a) False (b) True
27. 27.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the main chip (c) the reset button (d) the USB port
28. 28.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
29. 29.Which job is done by the power LED? (a) connect sensors and LEDs (b) restarts the program (c) keeps the voltage steady (d) shows the board is on
30. 30.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
31. 31.Which of these has no microcontroller inside? (a) a TV remote (b) a candle (c) a washing machine (d) a digital alarm clock
32. 32.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a spinning top (c) a candle (d) a hand pump
33. 33.Which of these has no microcontroller inside? (a) a TV remote (b) a digital thermometer (c) a microwave oven (d) a wind-up toy
34. 34.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
35. 35.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
36. 36.True or false: a hand pump has no microcontroller inside. (a) True (b) False
37. 37.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a toy robot (d) a hand pump
38. 38.Which of these usually has a microcontroller inside? (a) a candle (b) a TV remote (c) a bicycle bell (d) a spinning top
39. 39.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
40. 40.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop

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