Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 699 · 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.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
2. 2.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a wind-up toy (c) a candle (d) a smart watch
3. 3.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the pins (c) the main chip (d) the power LED
4. 4.Which of these has no microcontroller inside? (a) a smart watch (b) a digital alarm clock (c) a bicycle bell (d) a toy robot
5. 5.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
6. 6.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
7. 7.True or false: a laptop has no screen of its own. (a) True (b) False
8. 8.Which job is done by the reset button? (a) connect sensors and LEDs (b) brings power and code (c) keeps the voltage steady (d) restarts the program
9. 9.🤖 What is a microcontroller? (a) a kind of bulb (b) a computer on one chip (c) a big desktop computer (d) a type of battery
10. 10.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a bicycle bell (c) a wind-up toy (d) a hand pump
11. 11.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
12. 12.Which job is done by the power LED? (a) keeps the voltage steady (b) shows the board is on (c) connect sensors and LEDs (d) runs the program
13. 13.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
14. 14.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
15. 15.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the voltage regulator (c) the pins (d) the USB port
16. 16.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
17. 17.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
18. 18.True or false: a washing machine has no microcontroller inside. (a) True (b) False
19. 19.Which job is done by the USB port? (a) connect sensors and LEDs (b) keeps the voltage steady (c) restarts the program (d) brings power and code
20. 20.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
21. 21.Which job is done by the main chip? (a) restarts the program (b) keeps the voltage steady (c) runs the program (d) connect sensors and LEDs
22. 22.True or false: a laptop runs one small program. (a) False (b) True
23. 23.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the USB port (c) the power LED (d) the reset button
24. 24.🤖 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
25. 25.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) shows the board is on (d) runs the program
26. 26.Which job is done by the pins? (a) shows the board is on (b) restarts the program (c) brings power and code (d) connect sensors and LEDs
27. 27.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
28. 28.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
29. 29.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
30. 30.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a bicycle bell (c) a plain wall switch (d) a candle
31. 31.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
32. 32.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) sent by sound (d) typed on the chip
33. 33.Which of these usually has a microcontroller inside? (a) a spinning top (b) a toy robot (c) a wind-up toy (d) a candle
34. 34.True or false: a spinning top has no microcontroller inside. (a) True (b) False
35. 35.True or false: a microcontroller runs one small program. (a) True (b) False
36. 36.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
37. 37.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
38. 38.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it deletes itself (d) it stops forever
39. 39.Which of these has no microcontroller inside? (a) a plain wall switch (b) a TV remote (c) a microwave oven (d) a toy robot
40. 40.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the pins (c) the USB port (d) the voltage regulator

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