Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 538 · 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.🤖 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
2. 2.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a smart watch (d) a bicycle bell
3. 3.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
4. 4.Which of these has no microcontroller inside? (a) a smart watch (b) a hand pump (c) a digital alarm clock (d) a TV remote
5. 5.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the power LED (c) the voltage regulator (d) the main chip
6. 6.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the power LED (c) the main chip (d) the pins
7. 7.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
8. 8.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
9. 9.🤖 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
10. 10.Which job is done by the main chip? (a) brings power and code (b) restarts the program (c) connect sensors and LEDs (d) runs the program
11. 11.True or false: a hand pump has no microcontroller inside. (a) True (b) False
12. 12.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a computer on one chip (d) a type of battery
13. 13.True or false: a toy robot has no microcontroller inside. (a) False (b) True
14. 14.Which of these has no microcontroller inside? (a) a spinning top (b) a smart watch (c) a digital alarm clock (d) a microwave oven
15. 15.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a spinning top (d) a toy robot
16. 16.Which job is done by the reset button? (a) runs the program (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
17. 17.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a wind-up toy (d) a TV remote
18. 18.Which job is done by the power LED? (a) brings power and code (b) keeps the voltage steady (c) shows the board is on (d) restarts the program
19. 19.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the USB port (c) the power LED (d) the reset button
20. 20.True or false: a microcontroller uses very little power. (a) False (b) True
21. 21.Which of these usually has a microcontroller inside? (a) a candle (b) a spinning top (c) a hand pump (d) a digital alarm clock
22. 22.True or false: a laptop has no screen of its own. (a) True (b) False
23. 23.Which job is done by the pins? (a) keeps the voltage steady (b) restarts the program (c) brings power and code (d) connect sensors and LEDs
24. 24.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
25. 25.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the main chip (c) the pins (d) the USB port
26. 26.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
27. 27.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
28. 28.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
29. 29.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
30. 30.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
31. 31.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
32. 32.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it starts again (d) it stops forever
33. 33.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
34. 34.True or false: a laptop uses very little power. (a) False (b) True
35. 35.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a hand pump (d) a washing machine
36. 36.Which of these has no microcontroller inside? (a) a digital thermometer (b) a candle (c) a digital alarm clock (d) a washing machine
37. 37.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the USB port (c) the main chip (d) the reset button
38. 38.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) USB or a 9 V battery (c) a wall socket directly (d) bare mains wires
39. 39.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
40. 40.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True

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