Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 555 · 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.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) uploaded over USB (d) sent by sound
2. 2.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
3. 3.True or false: a laptop runs many apps at once. (a) False (b) True
4. 4.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
5. 5.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
6. 6.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the voltage regulator (c) the pins (d) the reset button
7. 7.Which of these has no microcontroller inside? (a) a bicycle bell (b) a TV remote (c) a toy robot (d) a digital thermometer
8. 8.True or false: a microcontroller runs many apps at once. (a) False (b) True
9. 9.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the power LED (c) the reset button (d) the main chip
10. 10.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
11. 11.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a TV remote (c) a spinning top (d) a bicycle bell
12. 12.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
13. 13.Which job is done by the USB port? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) runs the program
14. 14.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a digital alarm clock (d) a plain wall switch
15. 15.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
16. 16.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a spinning top (c) a toy robot (d) a microwave oven
17. 17.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a TV remote (d) a candle
18. 18.Which of these has no microcontroller inside? (a) a toy robot (b) a microwave oven (c) a washing machine (d) a plain wall switch
19. 19.Which of these usually has a microcontroller inside? (a) a hand pump (b) a toy robot (c) a bicycle bell (d) a candle
20. 20.Which of these usually has a microcontroller inside? (a) a washing machine (b) a candle (c) a bicycle bell (d) a wind-up toy
21. 21.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the voltage regulator (c) the reset button (d) the power LED
22. 22.Which job is done by the reset button? (a) restarts the program (b) connect sensors and LEDs (c) shows the board is on (d) runs the program
23. 23.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) a wall socket directly (c) USB or a 9 V battery (d) bare mains wires
24. 24.Which job is done by the voltage regulator? (a) restarts the program (b) shows the board is on (c) connect sensors and LEDs (d) keeps the voltage steady
25. 25.Which of these has no microcontroller inside? (a) a hand pump (b) a toy robot (c) a digital thermometer (d) a digital alarm clock
26. 26.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the pins (c) the USB port (d) the main chip
27. 27.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
28. 28.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
29. 29.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the resistor (c) the power LED (d) flash memory
30. 30.Which of these has no microcontroller inside? (a) a wind-up toy (b) a digital thermometer (c) a smart watch (d) a washing machine
31. 31.True or false: a candle usually has a microcontroller inside. (a) True (b) False
32. 32.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
33. 33.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
34. 34.True or false: a microcontroller needs much more power. (a) False (b) True
35. 35.🤖 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
36. 36.True or false: a microcontroller uses very little power. (a) False (b) True
37. 37.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the power LED (c) the reset button (d) the USB port
38. 38.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
39. 39.True or false: a toy robot has no microcontroller inside. (a) True (b) False
40. 40.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) the board breaks (d) it starts again

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