Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 262 · 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 job is done by the voltage regulator? (a) shows the board is on (b) runs the program (c) keeps the voltage steady (d) brings power and code
2. 2.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
3. 3.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the main chip (c) the power LED (d) the USB port
4. 4.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
5. 5.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a bicycle bell (d) a candle
6. 6.Which job is done by the reset button? (a) connect sensors and LEDs (b) restarts the program (c) keeps the voltage steady (d) brings power and code
7. 7.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the reset button (c) the power LED (d) the main chip
8. 8.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
9. 9.True or false: a laptop needs much more power. (a) False (b) True
10. 10.True or false: a laptop uses very little power. (a) False (b) True
11. 11.True or false: a candle usually has a microcontroller inside. (a) False (b) True
12. 12.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
13. 13.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) USB or a 9 V battery (d) a wall socket directly
14. 14.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
15. 15.🤖 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
16. 16.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) typed on the chip (d) uploaded over USB
17. 17.Which job is done by the pins? (a) runs the program (b) brings power and code (c) connect sensors and LEDs (d) keeps the voltage steady
18. 18.Which of these has no microcontroller inside? (a) a plain wall switch (b) a TV remote (c) a microwave oven (d) a digital alarm clock
19. 19.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a digital thermometer (d) a wind-up toy
20. 20.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
21. 21.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
22. 22.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
23. 23.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
24. 24.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
25. 25.Which job is done by the USB port? (a) runs the program (b) restarts the program (c) brings power and code (d) shows the board is on
26. 26.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
27. 27.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
28. 28.Which of these usually has a microcontroller inside? (a) a hand pump (b) a spinning top (c) a washing machine (d) a wind-up toy
29. 29.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
30. 30.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the pins (c) the main chip (d) the reset button
31. 31.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
32. 32.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
33. 33.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the power LED (c) the USB port (d) the pins
34. 34.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) the board breaks (d) it stops forever
35. 35.True or false: a microcontroller has no screen of its own. (a) True (b) False
36. 36.Which job is done by the power LED? (a) brings power and code (b) connect sensors and LEDs (c) keeps the voltage steady (d) shows the board is on
37. 37.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
38. 38.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a digital alarm clock (d) a plain wall switch
39. 39.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a hand pump (d) a smart watch
40. 40.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the USB cable (c) the power LED (d) flash memory

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