Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 382 · 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.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
2. 2.Which job is done by the power LED? (a) connect sensors and LEDs (b) restarts the program (c) runs the program (d) shows the board is on
3. 3.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a type of battery (d) a computer on one chip
4. 4.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
5. 5.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a hand pump (c) a microwave oven (d) a spinning top
6. 6.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) typed on the chip (d) uploaded over USB
7. 7.Which job is done by the USB port? (a) runs the program (b) brings power and code (c) keeps the voltage steady (d) restarts the program
8. 8.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a wall socket directly (d) a 230 V cable
9. 9.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) it deletes itself (d) the board breaks
10. 10.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the main chip (c) the reset button (d) the USB port
11. 11.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
12. 12.Which of these has no microcontroller inside? (a) a toy robot (b) a digital thermometer (c) a wind-up toy (d) a TV remote
13. 13.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the USB cable (c) flash memory (d) the power LED
14. 14.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the reset button (c) the voltage regulator (d) the USB port
15. 15.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the main chip (c) the pins (d) the power LED
16. 16.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a toy robot (d) a candle
17. 17.Which job is done by the reset button? (a) brings power and code (b) runs the program (c) restarts the program (d) keeps the voltage steady
18. 18.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the reset button (c) the voltage regulator (d) the USB port
19. 19.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) shows the board is on (d) restarts the program
20. 20.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
21. 21.True or false: a TV remote has no microcontroller inside. (a) False (b) True
22. 22.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
23. 23.Which job is done by the main chip? (a) shows the board is on (b) brings power and code (c) runs the program (d) connect sensors and LEDs
24. 24.Which of these has no microcontroller inside? (a) a candle (b) a digital alarm clock (c) a smart watch (d) a washing machine
25. 25.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a digital thermometer (c) a wind-up toy (d) a spinning top
26. 26.True or false: a hand pump has no microcontroller inside. (a) False (b) True
27. 27.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a spinning top (c) a toy robot (d) a microwave oven
28. 28.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the main chip (c) the voltage regulator (d) the pins
29. 29.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
30. 30.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
31. 31.True or false: a microcontroller has no screen of its own. (a) False (b) True
32. 32.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
33. 33.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
34. 34.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
35. 35.Which of these usually has a microcontroller inside? (a) a smart watch (b) a hand pump (c) a spinning top (d) a bicycle bell
36. 36.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
37. 37.True or false: a candle usually has a microcontroller inside. (a) True (b) False
38. 38.True or false: a microcontroller needs much more power. (a) True (b) False
39. 39.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the voltage regulator (c) the power LED (d) the pins
40. 40.True or false: a smart watch has no microcontroller inside. (a) True (b) False

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