Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 120 · 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 pins? (a) connect sensors and LEDs (b) keeps the voltage steady (c) shows the board is on (d) brings power and code
2. 2.Which of these usually has a microcontroller inside? (a) a TV remote (b) a hand pump (c) a bicycle bell (d) a wind-up toy
3. 3.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the main chip (c) the USB port (d) the pins
4. 4.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
5. 5.Which of these has no microcontroller inside? (a) a spinning top (b) a microwave oven (c) a digital thermometer (d) a toy robot
6. 6.True or false: a laptop has no screen of its own. (a) True (b) False
7. 7.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) flash memory (c) the power LED (d) the USB cable
8. 8.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
9. 9.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
10. 10.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
11. 11.True or false: a toy robot has no microcontroller inside. (a) False (b) True
12. 12.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
13. 13.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a washing machine (c) a bicycle bell (d) a candle
14. 14.Which job is done by the USB port? (a) runs the program (b) shows the board is on (c) connect sensors and LEDs (d) brings power and code
15. 15.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
16. 16.True or false: a microcontroller uses very little power. (a) True (b) False
17. 17.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the reset button (c) the voltage regulator (d) the power LED
18. 18.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
19. 19.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a spinning top (c) a plain wall switch (d) a hand pump
20. 20.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
21. 21.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the USB port (c) the power LED (d) the pins
22. 22.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
23. 23.Which job is done by the main chip? (a) shows the board is on (b) restarts the program (c) brings power and code (d) runs the program
24. 24.Which of these has no microcontroller inside? (a) a TV remote (b) a toy robot (c) a hand pump (d) a microwave oven
25. 25.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a wall socket directly (d) a 230 V cable
26. 26.True or false: a wind-up toy has no microcontroller inside. (a) False (b) True
27. 27.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a smart watch (d) a spinning top
28. 28.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
29. 29.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a computer on one chip (d) a kind of bulb
30. 30.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) sent by sound (c) typed on the chip (d) drawn with a pen
31. 31.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
32. 32.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
33. 33.True or false: a microcontroller needs much more power. (a) True (b) False
34. 34.True or false: a laptop needs much more power. (a) True (b) False
35. 35.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
36. 36.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
37. 37.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a spinning top (d) a digital thermometer
38. 38.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
39. 39.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
40. 40.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a toy robot (c) a digital thermometer (d) a bicycle bell

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