Electronics Worksheet: What Is a Microcontroller

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

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