Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 221 · 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 digital alarm clock (b) a microwave oven (c) a plain wall switch (d) a TV remote
2. 2.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
3. 3.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a toy robot (d) a wind-up toy
4. 4.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
5. 5.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
6. 6.True or false: a smart watch has no microcontroller inside. (a) True (b) False
7. 7.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
8. 8.🧭 Which part of a microcontroller board runs the program? (a) the voltage regulator (b) the USB port (c) the main chip (d) the reset button
9. 9.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the voltage regulator (c) the main chip (d) the reset button
10. 10.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the USB port (c) the voltage regulator (d) the pins
11. 11.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
12. 12.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
13. 13.Which job is done by the voltage regulator? (a) brings power and code (b) runs the program (c) keeps the voltage steady (d) connect sensors and LEDs
14. 14.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the voltage regulator (c) the USB port (d) the power LED
15. 15.Which job is done by the pins? (a) connect sensors and LEDs (b) brings power and code (c) keeps the voltage steady (d) restarts the program
16. 16.Which of these usually has a microcontroller inside? (a) a candle (b) a digital thermometer (c) a hand pump (d) a spinning top
17. 17.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
18. 18.Which of these has no microcontroller inside? (a) a candle (b) a TV remote (c) a digital thermometer (d) a digital alarm clock
19. 19.Which job is done by the power LED? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) brings power and code
20. 20.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a hand pump (d) a bicycle bell
21. 21.Which of these has no microcontroller inside? (a) a microwave oven (b) a spinning top (c) a digital alarm clock (d) a washing machine
22. 22.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
23. 23.Which job is done by the reset button? (a) keeps the voltage steady (b) restarts the program (c) brings power and code (d) runs the program
24. 24.True or false: a microcontroller has no screen of its own. (a) False (b) True
25. 25.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
26. 26.🤖 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
27. 27.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
28. 28.🧭 Which part of a microcontroller board shows the board is on? (a) the USB port (b) the voltage regulator (c) the power LED (d) the reset button
29. 29.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
30. 30.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) the resistor (d) flash memory
31. 31.🤖 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
32. 32.Which of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a spinning top (d) a smart watch
33. 33.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
34. 34.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
35. 35.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a computer on one chip (d) a type of battery
36. 36.Which job is done by the USB port? (a) connect sensors and LEDs (b) keeps the voltage steady (c) shows the board is on (d) brings power and code
37. 37.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
38. 38.True or false: a laptop uses very little power. (a) True (b) False
39. 39.True or false: a toy robot has no microcontroller inside. (a) True (b) False
40. 40.Which of these has no microcontroller inside? (a) a digital thermometer (b) a digital alarm clock (c) a bicycle bell (d) a TV remote

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