Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 503 · 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.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
2. 2.True or false: a hand pump has no microcontroller inside. (a) False (b) True
3. 3.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) a wall socket directly (d) USB or a 9 V battery
4. 4.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
5. 5.True or false: a laptop runs one small program. (a) True (b) False
6. 6.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
7. 7.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
8. 8.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the USB port (c) the pins (d) the power LED
9. 9.Which job is done by the USB port? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) brings power and code
10. 10.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
11. 11.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) sent by sound (c) drawn with a pen (d) typed on the chip
12. 12.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
13. 13.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
14. 14.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the power LED (c) the voltage regulator (d) the USB port
15. 15.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) flash memory (d) the power LED
16. 16.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
17. 17.Which job is done by the main chip? (a) runs the program (b) restarts the program (c) keeps the voltage steady (d) connect sensors and LEDs
18. 18.Which of these has no microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a washing machine (d) a digital thermometer
19. 19.🤖 What is a microcontroller? (a) a computer on one chip (b) a type of battery (c) a big desktop computer (d) a kind of bulb
20. 20.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
21. 21.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the reset button (c) the pins (d) the USB port
22. 22.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
23. 23.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a candle (c) a bicycle bell (d) a hand pump
24. 24.Which job is done by the voltage regulator? (a) restarts the program (b) runs the program (c) brings power and code (d) keeps the voltage steady
25. 25.True or false: a laptop uses very little power. (a) False (b) True
26. 26.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
27. 27.Which job is done by the power LED? (a) restarts the program (b) shows the board is on (c) runs the program (d) keeps the voltage steady
28. 28.True or false: a candle usually has a microcontroller inside. (a) True (b) False
29. 29.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a candle (d) a washing machine
30. 30.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a spinning top (c) a microwave oven (d) a bicycle bell
31. 31.Which job is done by the reset button? (a) keeps the voltage steady (b) restarts the program (c) connect sensors and LEDs (d) brings power and code
32. 32.True or false: a laptop has no screen of its own. (a) False (b) True
33. 33.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the voltage regulator (c) the USB port (d) the pins
34. 34.True or false: a microcontroller runs many apps at once. (a) True (b) False
35. 35.True or false: a microcontroller needs much more power. (a) False (b) True
36. 36.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it deletes itself (d) it starts again
37. 37.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
38. 38.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the reset button (c) the USB port (d) the pins
39. 39.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
40. 40.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No

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