Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 625 · 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 reset button? (a) restarts the program (b) runs the program (c) keeps the voltage steady (d) shows the board is on
2. 2.Which of these has no microcontroller inside? (a) a plain wall switch (b) a digital alarm clock (c) a microwave oven (d) a smart watch
3. 3.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a hand pump (d) a microwave oven
4. 4.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a bicycle bell (d) a washing machine
5. 5.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) the USB cable (d) flash memory
6. 6.Which of these has no microcontroller inside? (a) a TV remote (b) a digital thermometer (c) a wind-up toy (d) a washing machine
7. 7.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a washing machine (d) a wind-up toy
8. 8.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a smart watch (c) a candle (d) a digital thermometer
9. 9.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
10. 10.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a digital thermometer (d) a hand pump
11. 11.Which job is done by the voltage regulator? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) runs the program
12. 12.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the pins (c) the reset button (d) the voltage regulator
13. 13.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
14. 14.Which job is done by the power LED? (a) runs the program (b) keeps the voltage steady (c) brings power and code (d) shows the board is on
15. 15.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the reset button (c) the USB port (d) the power LED
16. 16.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) drawn with a pen (c) typed on the chip (d) sent by sound
17. 17.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the pins (c) the main chip (d) the reset button
18. 18.True or false: a laptop needs much more power. (a) True (b) False
19. 19.True or false: a toy robot has no microcontroller inside. (a) False (b) True
20. 20.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
21. 21.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) USB or a 9 V battery (d) bare mains wires
22. 22.🤖 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
23. 23.True or false: a laptop runs one small program. (a) False (b) True
24. 24.🤖 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
25. 25.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the main chip (c) the reset button (d) the pins
26. 26.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
27. 27.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
28. 28.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
29. 29.Which of these usually has a microcontroller inside? (a) a toy robot (b) a wind-up toy (c) a bicycle bell (d) a candle
30. 30.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
31. 31.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
32. 32.Which job is done by the USB port? (a) restarts the program (b) connect sensors and LEDs (c) runs the program (d) brings power and code
33. 33.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
34. 34.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
35. 35.Which job is done by the main chip? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) brings power and code
36. 36.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
37. 37.True or false: a laptop has no screen of its own. (a) True (b) False
38. 38.True or false: a TV remote has no microcontroller inside. (a) False (b) True
39. 39.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a hand pump (c) a plain wall switch (d) a TV remote
40. 40.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the power LED (c) the reset button (d) the USB port

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