Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 588 · 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 power LED? (a) shows the board is on (b) keeps the voltage steady (c) connect sensors and LEDs (d) restarts the program
2. 2.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
3. 3.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
4. 4.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the USB cable (d) the resistor
5. 5.🤖 What is a microcontroller? (a) a computer on one chip (b) a type of battery (c) a big desktop computer (d) a kind of bulb
6. 6.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) a wall socket directly (d) USB or a 9 V battery
7. 7.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
8. 8.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a washing machine (c) a hand pump (d) a spinning top
9. 9.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
10. 10.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a toy robot (d) a wind-up toy
11. 11.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
12. 12.True or false: a candle has no microcontroller inside. (a) True (b) False
13. 13.True or false: a laptop runs one small program. (a) False (b) True
14. 14.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
15. 15.Which job is done by the reset button? (a) keeps the voltage steady (b) brings power and code (c) restarts the program (d) connect sensors and LEDs
16. 16.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
17. 17.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
18. 18.True or false: a laptop uses very little power. (a) False (b) True
19. 19.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
20. 20.Which of these usually has a microcontroller inside? (a) a candle (b) a digital alarm clock (c) a spinning top (d) a hand pump
21. 21.🧭 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
22. 22.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
23. 23.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) drawn with a pen (c) typed on the chip (d) sent by sound
24. 24.True or false: a laptop has no screen of its own. (a) True (b) False
25. 25.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
26. 26.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
27. 27.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
28. 28.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the USB port (c) the reset button (d) the pins
29. 29.🤖 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
30. 30.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
31. 31.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the main chip (c) the power LED (d) the reset button
32. 32.Which job is done by the pins? (a) restarts the program (b) runs the program (c) connect sensors and LEDs (d) brings power and code
33. 33.True or false: a microcontroller uses very little power. (a) True (b) False
34. 34.Which of these usually has a microcontroller inside? (a) a hand pump (b) a microwave oven (c) a candle (d) a plain wall switch
35. 35.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the pins (c) the USB port (d) the voltage regulator
36. 36.Which of these has no microcontroller inside? (a) a candle (b) a digital alarm clock (c) a microwave oven (d) a digital thermometer
37. 37.True or false: a microcontroller runs many apps at once. (a) True (b) False
38. 38.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
39. 39.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
40. 40.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes

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