Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 199 · 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 is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) USB or a 9 V battery (d) bare mains wires
2. 2.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
3. 3.True or false: a microcontroller uses very little power. (a) True (b) False
4. 4.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the pins (c) the main chip (d) the reset button
5. 5.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a digital alarm clock (d) a hand pump
6. 6.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
7. 7.🤖 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
8. 8.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
9. 9.Which of these usually has a microcontroller inside? (a) a spinning top (b) a hand pump (c) a digital thermometer (d) a bicycle bell
10. 10.Which job is done by the pins? (a) restarts the program (b) runs the program (c) brings power and code (d) connect sensors and LEDs
11. 11.Which job is done by the USB port? (a) restarts the program (b) keeps the voltage steady (c) connect sensors and LEDs (d) brings power and code
12. 12.Which job is done by the power LED? (a) connect sensors and LEDs (b) shows the board is on (c) runs the program (d) keeps the voltage steady
13. 13.True or false: a microcontroller has no screen of its own. (a) True (b) False
14. 14.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
15. 15.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
16. 16.True or false: a smart watch has no microcontroller inside. (a) True (b) False
17. 17.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a wind-up toy (d) a toy robot
18. 18.Which job is done by the voltage regulator? (a) runs the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) brings power and code
19. 19.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the USB cable (d) the power LED
20. 20.Which of these has no microcontroller inside? (a) a smart watch (b) a digital thermometer (c) a bicycle bell (d) a TV remote
21. 21.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
22. 22.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
23. 23.Which of these has no microcontroller inside? (a) a wind-up toy (b) a digital thermometer (c) a TV remote (d) a digital alarm clock
24. 24.Which of these has no microcontroller inside? (a) a candle (b) a digital thermometer (c) a microwave oven (d) a digital alarm clock
25. 25.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital thermometer (c) a smart watch (d) a hand pump
26. 26.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the pins (c) the USB port (d) the main chip
27. 27.Which of these usually has a microcontroller inside? (a) a candle (b) a hand pump (c) a bicycle bell (d) a smart watch
28. 28.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a washing machine (d) a wind-up toy
29. 29.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
30. 30.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it deletes itself (c) it stops forever (d) it starts again
31. 31.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) uploaded over USB (d) sent by sound
32. 32.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
33. 33.True or false: a washing machine has no microcontroller inside. (a) True (b) False
34. 34.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
35. 35.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
36. 36.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
37. 37.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
38. 38.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the pins (c) the USB port (d) the main chip
39. 39.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the reset button (c) the USB port (d) the voltage regulator
40. 40.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop

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