Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 73 · 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.True or false: a microcontroller has no screen of its own. (a) True (b) False
2. 2.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
3. 3.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
4. 4.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
5. 5.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a digital alarm clock (d) a spinning top
6. 6.True or false: a laptop uses very little power. (a) True (b) False
7. 7.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the reset button (c) the pins (d) the power LED
8. 8.Which job is done by the reset button? (a) keeps the voltage steady (b) connect sensors and LEDs (c) restarts the program (d) brings power and code
9. 9.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
10. 10.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
11. 11.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
12. 12.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
13. 13.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
14. 14.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
15. 15.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the power LED (c) the resistor (d) the USB cable
16. 16.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a 230 V cable (d) a wall socket directly
17. 17.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
18. 18.True or false: a laptop has a built-in keyboard. (a) True (b) False
19. 19.Which of these usually has a microcontroller inside? (a) a washing machine (b) a candle (c) a hand pump (d) a wind-up toy
20. 20.Which of these has no microcontroller inside? (a) a TV remote (b) a wind-up toy (c) a washing machine (d) a microwave oven
21. 21.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
22. 22.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the pins (c) the reset button (d) the USB port
23. 23.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a TV remote (d) a hand pump
24. 24.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the power LED (c) the main chip (d) the reset button
25. 25.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a digital thermometer (d) a wind-up toy
26. 26.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
27. 27.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it starts again (d) it deletes itself
28. 28.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
29. 29.Which job is done by the main chip? (a) runs the program (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
30. 30.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
31. 31.True or false: a microcontroller needs much more power. (a) True (b) False
32. 32.Which job is done by the power LED? (a) connect sensors and LEDs (b) keeps the voltage steady (c) brings power and code (d) shows the board is on
33. 33.True or false: a spinning top has no microcontroller inside. (a) False (b) True
34. 34.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
35. 35.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) shows the board is on (c) restarts the program (d) keeps the voltage steady
36. 36.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
37. 37.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
38. 38.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) uploaded over USB (d) sent by sound
39. 39.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
40. 40.True or false: a laptop has no screen of its own. (a) True (b) False

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