Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 280 · 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 laptop has a built-in keyboard. (a) True (b) False
2. 2.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
3. 3.True or false: a microcontroller has no screen of its own. (a) False (b) True
4. 4.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a plain wall switch (d) a wind-up toy
5. 5.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) the board breaks (c) it deletes itself (d) it stops forever
6. 6.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
7. 7.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
8. 8.True or false: a laptop needs much more power. (a) True (b) False
9. 9.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a smart watch (c) a plain wall switch (d) a hand pump
10. 10.True or false: a microcontroller runs one small program. (a) False (b) True
11. 11.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the power LED (c) the voltage regulator (d) the reset button
12. 12.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) flash memory (c) the USB cable (d) the resistor
13. 13.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
14. 14.Which job is done by the reset button? (a) brings power and code (b) restarts the program (c) keeps the voltage steady (d) connect sensors and LEDs
15. 15.Which of these usually has a microcontroller inside? (a) a washing machine (b) a wind-up toy (c) a hand pump (d) a bicycle bell
16. 16.Which of these has no microcontroller inside? (a) a digital thermometer (b) a plain wall switch (c) a smart watch (d) a toy robot
17. 17.True or false: a laptop runs many apps at once. (a) False (b) True
18. 18.Which of these has no microcontroller inside? (a) a smart watch (b) a candle (c) a digital thermometer (d) a microwave oven
19. 19.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
20. 20.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a digital alarm clock (c) a hand pump (d) a bicycle bell
21. 21.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
22. 22.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
23. 23.True or false: a plain wall switch has no microcontroller inside. (a) False (b) True
24. 24.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
25. 25.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a spinning top (d) a microwave oven
26. 26.Which of these usually has a microcontroller inside? (a) a spinning top (b) a bicycle bell (c) a TV remote (d) a candle
27. 27.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the power LED (c) the reset button (d) the voltage regulator
28. 28.Which job is done by the main chip? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) restarts the program
29. 29.Which job is done by the voltage regulator? (a) shows the board is on (b) runs the program (c) restarts the program (d) keeps the voltage steady
30. 30.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the main chip (c) the reset button (d) the voltage regulator
31. 31.True or false: a microcontroller uses very little power. (a) False (b) True
32. 32.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the USB port (c) the main chip (d) the pins
33. 33.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the voltage regulator (c) the reset button (d) the power LED
34. 34.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
35. 35.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a kind of bulb (d) a computer on one chip
36. 36.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the voltage regulator (c) the USB port (d) the power LED
37. 37.Which job is done by the USB port? (a) restarts the program (b) keeps the voltage steady (c) brings power and code (d) connect sensors and LEDs
38. 38.Which job is done by the pins? (a) connect sensors and LEDs (b) brings power and code (c) runs the program (d) restarts the program
39. 39.Which job is done by the power LED? (a) shows the board is on (b) brings power and code (c) keeps the voltage steady (d) restarts the program
40. 40.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes

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