Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 217 · 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 plain wall switch usually have a microcontroller inside? (a) Yes (b) No
2. 2.True or false: a microcontroller has no screen of its own. (a) False (b) True
3. 3.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the pins (c) the main chip (d) the voltage regulator
4. 4.Which of these has no microcontroller inside? (a) a washing machine (b) a digital alarm clock (c) a spinning top (d) a microwave oven
5. 5.Which job is done by the power LED? (a) shows the board is on (b) brings power and code (c) connect sensors and LEDs (d) runs the program
6. 6.True or false: a spinning top has no microcontroller inside. (a) False (b) True
7. 7.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
8. 8.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
9. 9.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
10. 10.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the USB port (c) the reset button (d) the voltage regulator
11. 11.🤖 What is a microcontroller? (a) a computer on one chip (b) a big desktop computer (c) a type of battery (d) a kind of bulb
12. 12.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
13. 13.True or false: a microcontroller needs much more power. (a) True (b) False
14. 14.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a washing machine (d) a candle
15. 15.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
16. 16.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the voltage regulator (c) the USB port (d) the main chip
17. 17.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
18. 18.Which job is done by the reset button? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) restarts the program
19. 19.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
20. 20.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
21. 21.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a wall socket directly (c) bare mains wires (d) a 230 V cable
22. 22.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
23. 23.Which of these has no microcontroller inside? (a) a smart watch (b) a hand pump (c) a microwave oven (d) a digital thermometer
24. 24.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) the resistor (d) flash memory
25. 25.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a plain wall switch (d) a digital alarm clock
26. 26.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
27. 27.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
28. 28.Which of these has no microcontroller inside? (a) a washing machine (b) a candle (c) a smart watch (d) a microwave oven
29. 29.Which job is done by the USB port? (a) brings power and code (b) shows the board is on (c) runs the program (d) keeps the voltage steady
30. 30.True or false: a laptop runs one small program. (a) True (b) False
31. 31.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
32. 32.True or false: a microcontroller uses very little power. (a) False (b) True
33. 33.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a digital thermometer (c) a plain wall switch (d) a bicycle bell
34. 34.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) it stops forever (d) the board breaks
35. 35.True or false: a laptop has no screen of its own. (a) False (b) True
36. 36.True or false: a smart watch has no microcontroller inside. (a) True (b) False
37. 37.Which of these has no microcontroller inside? (a) a toy robot (b) a plain wall switch (c) a digital thermometer (d) a TV remote
38. 38.True or false: a washing machine has no microcontroller inside. (a) True (b) False
39. 39.True or false: a laptop uses very little power. (a) True (b) False
40. 40.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True

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