Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 147 · 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 shows the board is on? (a) the power LED (b) the USB port (c) the pins (d) the main chip
2. 2.True or false: a microcontroller needs much more power. (a) False (b) True
3. 3.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
4. 4.True or false: a spinning top has no microcontroller inside. (a) True (b) False
5. 5.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a microwave oven (d) a plain wall switch
6. 6.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) flash memory (d) the resistor
7. 7.True or false: a microcontroller uses very little power. (a) False (b) True
8. 8.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
9. 9.🤖 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
10. 10.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
11. 11.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a 230 V cable (c) a wall socket directly (d) bare mains wires
12. 12.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
13. 13.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
14. 14.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
15. 15.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
16. 16.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) typed on the chip (c) drawn with a pen (d) uploaded over USB
17. 17.True or false: a laptop needs much more power. (a) False (b) True
18. 18.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it deletes itself (d) it stops forever
19. 19.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
20. 20.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
21. 21.Which job is done by the USB port? (a) keeps the voltage steady (b) runs the program (c) connect sensors and LEDs (d) brings power and code
22. 22.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
23. 23.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the USB port (c) the main chip (d) the pins
24. 24.Which of these has no microcontroller inside? (a) a digital thermometer (b) a toy robot (c) a digital alarm clock (d) a candle
25. 25.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
26. 26.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the reset button (c) the main chip (d) the USB port
27. 27.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
28. 28.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the USB port (c) the power LED (d) the voltage regulator
29. 29.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
30. 30.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a bicycle bell (c) a hand pump (d) a digital alarm clock
31. 31.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
32. 32.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
33. 33.True or false: a laptop has a built-in keyboard. (a) False (b) True
34. 34.Which of these has no microcontroller inside? (a) a smart watch (b) a toy robot (c) a digital alarm clock (d) a spinning top
35. 35.Which job is done by the power LED? (a) brings power and code (b) runs the program (c) shows the board is on (d) restarts the program
36. 36.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
37. 37.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
38. 38.Which of these has no microcontroller inside? (a) a microwave oven (b) a washing machine (c) a digital thermometer (d) a hand pump
39. 39.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
40. 40.Which of these usually has a microcontroller inside? (a) a spinning top (b) a hand pump (c) a bicycle bell (d) a toy robot

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