Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 670 · 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.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
2. 2.Which of these usually has a microcontroller inside? (a) a candle (b) a washing machine (c) a bicycle bell (d) a hand pump
3. 3.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) USB or a 9 V battery (c) a wall socket directly (d) bare mains wires
4. 4.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the power LED (c) the voltage regulator (d) the USB port
5. 5.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the power LED (d) the USB cable
6. 6.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
7. 7.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
8. 8.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
9. 9.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
10. 10.Which of these usually has a microcontroller inside? (a) a hand pump (b) a spinning top (c) a wind-up toy (d) a smart watch
11. 11.Which job is done by the pins? (a) restarts the program (b) brings power and code (c) connect sensors and LEDs (d) keeps the voltage steady
12. 12.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
13. 13.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
14. 14.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
15. 15.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the reset button (c) the voltage regulator (d) the main chip
16. 16.Which job is done by the main chip? (a) connect sensors and LEDs (b) runs the program (c) shows the board is on (d) keeps the voltage steady
17. 17.True or false: a microcontroller uses very little power. (a) False (b) True
18. 18.Which of these has no microcontroller inside? (a) a washing machine (b) a digital alarm clock (c) a smart watch (d) a plain wall switch
19. 19.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
20. 20.Which of these has no microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a digital thermometer (d) a digital alarm clock
21. 21.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
22. 22.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
23. 23.🤖 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
24. 24.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
25. 25.Which job is done by the power LED? (a) runs the program (b) keeps the voltage steady (c) shows the board is on (d) restarts the program
26. 26.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
27. 27.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
28. 28.Which of these has no microcontroller inside? (a) a smart watch (b) a washing machine (c) a bicycle bell (d) a digital alarm clock
29. 29.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the USB port (c) the voltage regulator (d) the reset button
30. 30.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the pins (c) the power LED (d) the main chip
31. 31.Which of these usually has a microcontroller inside? (a) a hand pump (b) a digital thermometer (c) a plain wall switch (d) a candle
32. 32.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
33. 33.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
34. 34.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a candle (c) a TV remote (d) a digital thermometer
35. 35.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a toy robot (c) a candle (d) a hand pump
36. 36.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the pins (c) the USB port (d) the voltage regulator
37. 37.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a big desktop computer (d) a computer on one chip
38. 38.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
39. 39.True or false: a microcontroller runs one small program. (a) False (b) True
40. 40.Which of these has no microcontroller inside? (a) a microwave oven (b) a washing machine (c) a toy robot (d) a spinning top

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