Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 471 · 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 part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the voltage regulator (c) the pins (d) the USB port
2. 2.🤖 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
3. 3.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) sent by sound (d) uploaded over USB
4. 4.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
5. 5.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a computer on one chip (d) a kind of bulb
6. 6.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
7. 7.True or false: a toy robot has no microcontroller inside. (a) True (b) False
8. 8.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
9. 9.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a 230 V cable (d) a wall socket directly
10. 10.🤖 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
11. 11.Which job is done by the USB port? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) runs the program
12. 12.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
13. 13.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
14. 14.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
15. 15.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
16. 16.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
17. 17.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a digital thermometer (d) a candle
18. 18.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a plain wall switch (c) a TV remote (d) a microwave oven
19. 19.Which of these has no microcontroller inside? (a) a bicycle bell (b) a washing machine (c) a microwave oven (d) a smart watch
20. 20.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a spinning top (c) a hand pump (d) a TV remote
21. 21.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
22. 22.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
23. 23.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a candle (c) a digital thermometer (d) a toy robot
24. 24.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
25. 25.True or false: a laptop needs much more power. (a) True (b) False
26. 26.Which job is done by the main chip? (a) shows the board is on (b) brings power and code (c) runs the program (d) keeps the voltage steady
27. 27.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a wind-up toy (d) a toy robot
28. 28.True or false: a microcontroller runs one small program. (a) True (b) False
29. 29.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
30. 30.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
31. 31.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
32. 32.True or false: a laptop uses very little power. (a) True (b) False
33. 33.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the USB port (c) the pins (d) the reset button
34. 34.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the USB port (c) the reset button (d) the pins
35. 35.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
36. 36.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) shows the board is on (c) restarts the program (d) brings power and code
37. 37.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
38. 38.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
39. 39.Which job is done by the power LED? (a) brings power and code (b) shows the board is on (c) connect sensors and LEDs (d) restarts the program
40. 40.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes

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