Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 342 · 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 job is done by the main chip? (a) runs the program (b) keeps the voltage steady (c) restarts the program (d) brings power and code
2. 2.True or false: a laptop runs one small program. (a) True (b) False
3. 3.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
4. 4.Which job is done by the USB port? (a) shows the board is on (b) connect sensors and LEDs (c) brings power and code (d) keeps the voltage steady
5. 5.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
6. 6.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
7. 7.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a digital alarm clock (d) a bicycle bell
8. 8.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) a 230 V cable (d) USB or a 9 V battery
9. 9.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
10. 10.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
11. 11.Which of these usually has a microcontroller inside? (a) a candle (b) a digital alarm clock (c) a plain wall switch (d) a hand pump
12. 12.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the reset button (c) the USB port (d) the pins
13. 13.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
14. 14.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the power LED (c) the pins (d) the main chip
15. 15.True or false: a plain wall switch usually has a microcontroller inside. (a) True (b) False
16. 16.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
17. 17.Which of these has no microcontroller inside? (a) a TV remote (b) a washing machine (c) a microwave oven (d) a wind-up toy
18. 18.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) drawn with a pen (d) sent by sound
19. 19.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
20. 20.Which of these has no microcontroller inside? (a) a digital thermometer (b) a hand pump (c) a toy robot (d) a washing machine
21. 21.Which of these has no microcontroller inside? (a) a smart watch (b) a microwave oven (c) a plain wall switch (d) a toy robot
22. 22.🤖 What is a microcontroller? (a) a computer on one chip (b) a type of battery (c) a kind of bulb (d) a big desktop computer
23. 23.True or false: a candle has no microcontroller inside. (a) True (b) False
24. 24.Which of these usually has a microcontroller inside? (a) a hand pump (b) a microwave oven (c) a candle (d) a wind-up toy
25. 25.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
26. 26.Which job is done by the pins? (a) shows the board is on (b) connect sensors and LEDs (c) restarts the program (d) keeps the voltage steady
27. 27.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the pins (c) the reset button (d) the USB port
28. 28.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the power LED (d) the resistor
29. 29.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) keeps the voltage steady
30. 30.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
31. 31.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the reset button (c) the USB port (d) the voltage regulator
32. 32.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
33. 33.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) the board breaks (d) it starts again
34. 34.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the pins (c) the main chip (d) the USB port
35. 35.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
36. 36.True or false: a digital alarm clock usually has a microcontroller inside. (a) True (b) False
37. 37.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the power LED (c) the reset button (d) the main chip
38. 38.True or false: a TV remote has no microcontroller inside. (a) True (b) False
39. 39.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
40. 40.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No

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