Electronics Worksheet: What Is a Microcontroller

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

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids