Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 129 · 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) keeps the voltage steady (c) runs the program (d) connect sensors and LEDs
2. 2.🤖 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
3. 3.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the resistor (d) the power LED
4. 4.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
5. 5.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
6. 6.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
7. 7.Which of these has no microcontroller inside? (a) a microwave oven (b) a smart watch (c) a digital thermometer (d) a plain wall switch
8. 8.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
9. 9.Which job is done by the pins? (a) runs the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) shows the board is on
10. 10.True or false: a laptop has no screen of its own. (a) True (b) False
11. 11.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
12. 12.Which of these usually has a microcontroller inside? (a) a candle (b) a microwave oven (c) a plain wall switch (d) a bicycle bell
13. 13.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the power LED (c) the main chip (d) the pins
14. 14.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
15. 15.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the USB port (c) the pins (d) the reset button
16. 16.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
17. 17.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a toy robot (c) a bicycle bell (d) a plain wall switch
18. 18.True or false: a microcontroller needs much more power. (a) False (b) True
19. 19.Which job is done by the reset button? (a) connect sensors and LEDs (b) brings power and code (c) shows the board is on (d) restarts the program
20. 20.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
21. 21.True or false: a laptop uses very little power. (a) False (b) True
22. 22.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a big desktop computer (d) a kind of bulb
23. 23.Which of these has no microcontroller inside? (a) a washing machine (b) a spinning top (c) a TV remote (d) a smart watch
24. 24.True or false: a toy robot has no microcontroller inside. (a) True (b) False
25. 25.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
26. 26.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
27. 27.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) sent by sound (d) uploaded over USB
28. 28.Which of these usually has a microcontroller inside? (a) a hand pump (b) a TV remote (c) a spinning top (d) a wind-up toy
29. 29.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
30. 30.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
31. 31.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a washing machine (d) a plain wall switch
32. 32.🤖 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
33. 33.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the pins (c) the main chip (d) the reset button
34. 34.Which job is done by the USB port? (a) brings power and code (b) runs the program (c) keeps the voltage steady (d) restarts the program
35. 35.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a plain wall switch (d) a digital thermometer
36. 36.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a digital alarm clock (d) a wind-up toy
37. 37.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
38. 38.Which job is done by the power LED? (a) runs the program (b) restarts the program (c) brings power and code (d) shows the board is on
39. 39.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the voltage regulator (c) the power LED (d) the reset button
40. 40.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a hand pump (c) a bicycle bell (d) a smart watch

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