Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 725 · 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 has no microcontroller inside? (a) a TV remote (b) a digital alarm clock (c) a microwave oven (d) a candle
2. 2.🤖 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
3. 3.Which job is done by the USB port? (a) brings power and code (b) restarts the program (c) shows the board is on (d) keeps the voltage steady
4. 4.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
5. 5.True or false: a toy robot usually has a microcontroller inside. (a) True (b) False
6. 6.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a smart watch (d) a spinning top
7. 7.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a hand pump (d) a TV remote
8. 8.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the reset button (c) the main chip (d) the USB port
9. 9.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
10. 10.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the USB port (c) the reset button (d) the power LED
11. 11.Which of these usually has a microcontroller inside? (a) a candle (b) a washing machine (c) a plain wall switch (d) a wind-up toy
12. 12.Which of these has no microcontroller inside? (a) a bicycle bell (b) a smart watch (c) a digital alarm clock (d) a washing machine
13. 13.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) flash memory (d) the resistor
14. 14.True or false: a microcontroller runs one small program. (a) False (b) True
15. 15.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
16. 16.True or false: a laptop has no screen of its own. (a) False (b) True
17. 17.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
18. 18.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a digital thermometer (c) a wind-up toy (d) a hand pump
19. 19.True or false: a washing machine has no microcontroller inside. (a) False (b) True
20. 20.Which job is done by the main chip? (a) restarts the program (b) keeps the voltage steady (c) runs the program (d) shows the board is on
21. 21.True or false: a smart watch has no microcontroller inside. (a) False (b) True
22. 22.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
23. 23.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
24. 24.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the main chip (c) the voltage regulator (d) the power LED
25. 25.🧭 Which part of a microcontroller board brings power and code? (a) the power LED (b) the reset button (c) the USB port (d) the voltage regulator
26. 26.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
27. 27.True or false: a laptop uses very little power. (a) True (b) False
28. 28.Which of these has no microcontroller inside? (a) a smart watch (b) a washing machine (c) a hand pump (d) a TV remote
29. 29.Which of these usually has a microcontroller inside? (a) a hand pump (b) a microwave oven (c) a candle (d) a spinning top
30. 30.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
31. 31.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
32. 32.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
33. 33.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a plain wall switch (d) a washing machine
34. 34.True or false: a microcontroller runs many apps at once. (a) True (b) False
35. 35.True or false: a bicycle bell has no microcontroller inside. (a) True (b) False
36. 36.True or false: a microcontroller uses very little power. (a) True (b) False
37. 37.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
38. 38.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
39. 39.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
40. 40.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) the board breaks (c) it starts again (d) it stops forever

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