Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 642 · 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 microcontroller needs much more power. (a) True (b) False
2. 2.Which job is done by the pins? (a) keeps the voltage steady (b) runs the program (c) shows the board is on (d) connect sensors and LEDs
3. 3.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) the resistor (d) flash memory
4. 4.Which job is done by the USB port? (a) keeps the voltage steady (b) brings power and code (c) runs the program (d) restarts the program
5. 5.Which of these usually has a microcontroller inside? (a) a candle (b) a smart watch (c) a hand pump (d) a bicycle bell
6. 6.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
7. 7.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
8. 8.Which of these has no microcontroller inside? (a) a spinning top (b) a smart watch (c) a washing machine (d) a digital alarm clock
9. 9.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the pins (c) the USB port (d) the main chip
10. 10.True or false: a candle has no microcontroller inside. (a) True (b) False
11. 11.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the USB port (c) the power LED (d) the pins
12. 12.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
13. 13.Which of these usually has a microcontroller inside? (a) a spinning top (b) a TV remote (c) a plain wall switch (d) a wind-up toy
14. 14.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
15. 15.Which job is done by the reset button? (a) restarts the program (b) brings power and code (c) connect sensors and LEDs (d) shows the board is on
16. 16.🤖 What is a microcontroller? (a) a type of battery (b) a computer on one chip (c) a kind of bulb (d) a big desktop computer
17. 17.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
18. 18.Which of these has no microcontroller inside? (a) a digital thermometer (b) a washing machine (c) a hand pump (d) a microwave oven
19. 19.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a hand pump (d) a microwave oven
20. 20.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a toy robot (c) a candle (d) a digital thermometer
21. 21.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
22. 22.Which job is done by the power LED? (a) shows the board is on (b) connect sensors and LEDs (c) restarts the program (d) brings power and code
23. 23.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) uploaded over USB (d) drawn with a pen
24. 24.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the pins (c) the power LED (d) the USB port
25. 25.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) USB or a 9 V battery (c) bare mains wires (d) a 230 V cable
26. 26.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
27. 27.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
28. 28.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
29. 29.Which of these has no microcontroller inside? (a) a washing machine (b) a digital thermometer (c) a microwave oven (d) a bicycle bell
30. 30.Which of these usually has a microcontroller inside? (a) a hand pump (b) a washing machine (c) a spinning top (d) a bicycle bell
31. 31.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the main chip (c) the USB port (d) the voltage regulator
32. 32.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
33. 33.True or false: a laptop has no screen of its own. (a) False (b) True
34. 34.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
35. 35.🤖 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
36. 36.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
37. 37.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
38. 38.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
39. 39.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
40. 40.True or false: a microcontroller has no screen of its own. (a) False (b) True

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