Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 88 · 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 part of a microcontroller board runs the program? (a) the pins (b) the main chip (c) the voltage regulator (d) the reset button
2. 2.Which job is done by the USB port? (a) restarts the program (b) brings power and code (c) runs the program (d) keeps the voltage steady
3. 3.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) shows the board is on (d) runs the program
4. 4.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
5. 5.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the pins (c) the power LED (d) the main chip
6. 6.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
7. 7.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
8. 8.Which job is done by the power LED? (a) keeps the voltage steady (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
9. 9.Which job is done by the reset button? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) shows the board is on
10. 10.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
11. 11.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the power LED (c) the USB port (d) the pins
12. 12.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
13. 13.True or false: a washing machine has no microcontroller inside. (a) False (b) True
14. 14.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the pins (c) the power LED (d) the USB port
15. 15.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a 230 V cable (d) a wall socket directly
16. 16.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
17. 17.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
18. 18.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
19. 19.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
20. 20.True or false: a laptop needs much more power. (a) False (b) True
21. 21.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) the resistor (d) flash memory
22. 22.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a microwave oven (c) a spinning top (d) a hand pump
23. 23.🤖 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
24. 24.True or false: a laptop has no screen of its own. (a) False (b) True
25. 25.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
26. 26.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
27. 27.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) uploaded over USB (d) typed on the chip
28. 28.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
29. 29.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it stops forever (c) it starts again (d) it deletes itself
30. 30.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
31. 31.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a spinning top (c) a digital alarm clock (d) a bicycle bell
32. 32.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
33. 33.Which of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a digital thermometer (d) a plain wall switch
34. 34.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
35. 35.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
36. 36.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
37. 37.Which job is done by the pins? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) restarts the program
38. 38.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the reset button (c) the pins (d) the voltage regulator
39. 39.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
40. 40.🧭 Which part of a microcontroller board restarts the program? (a) the voltage regulator (b) the reset button (c) the power LED (d) the main chip

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