Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 756 · 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 of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a plain wall switch (d) a digital alarm clock
2. 2.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
3. 3.True or false: a microcontroller runs many apps at once. (a) False (b) True
4. 4.True or false: a microcontroller needs much more power. (a) True (b) False
5. 5.True or false: a laptop uses very little power. (a) True (b) False
6. 6.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it stops forever (d) it starts again
7. 7.Which job is done by the USB port? (a) keeps the voltage steady (b) brings power and code (c) runs the program (d) shows the board is on
8. 8.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
9. 9.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
10. 10.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the pins (c) the reset button (d) the main chip
11. 11.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the power LED (c) the reset button (d) the USB port
12. 12.Which of these has no microcontroller inside? (a) a toy robot (b) a TV remote (c) a spinning top (d) a washing machine
13. 13.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the reset button (c) the power LED (d) the pins
14. 14.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
15. 15.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a hand pump (c) a washing machine (d) a smart watch
16. 16.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
17. 17.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a wall socket directly (d) a 230 V cable
18. 18.True or false: a laptop has no screen of its own. (a) True (b) False
19. 19.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
20. 20.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
21. 21.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True
22. 22.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
23. 23.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the voltage regulator (c) the reset button (d) the USB port
24. 24.True or false: a laptop runs one small program. (a) True (b) False
25. 25.Which of these has no microcontroller inside? (a) a toy robot (b) a washing machine (c) a plain wall switch (d) a digital alarm clock
26. 26.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
27. 27.True or false: a candle has no microcontroller inside. (a) False (b) True
28. 28.🤖 What is a microcontroller? (a) a kind of bulb (b) a type of battery (c) a computer on one chip (d) a big desktop computer
29. 29.Which job is done by the reset button? (a) brings power and code (b) restarts the program (c) shows the board is on (d) runs the program
30. 30.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
31. 31.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) sent by sound (d) typed on the chip
32. 32.Which job is done by the pins? (a) runs the program (b) shows the board is on (c) brings power and code (d) connect sensors and LEDs
33. 33.True or false: a microcontroller runs one small program. (a) False (b) True
34. 34.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
35. 35.True or false: a hand pump has no microcontroller inside. (a) False (b) True
36. 36.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a toy robot (d) a bicycle bell
37. 37.Which of these has no microcontroller inside? (a) a TV remote (b) a digital thermometer (c) a toy robot (d) a candle
38. 38.Which job is done by the voltage regulator? (a) restarts the program (b) runs the program (c) brings power and code (d) keeps the voltage steady
39. 39.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
40. 40.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop

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