Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 289 · 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) keeps the voltage steady (b) runs the program (c) brings power and code (d) restarts the program
2. 2.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
3. 3.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the main chip (c) the pins (d) the reset button
4. 4.Which job is done by the pins? (a) shows the board is on (b) restarts the program (c) connect sensors and LEDs (d) runs the program
5. 5.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a hand pump (d) a microwave oven
6. 6.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
7. 7.True or false: a spinning top has no microcontroller inside. (a) True (b) False
8. 8.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
9. 9.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the power LED (c) the pins (d) the USB port
10. 10.Which job is done by the reset button? (a) keeps the voltage steady (b) shows the board is on (c) brings power and code (d) restarts the program
11. 11.Which job is done by the voltage regulator? (a) restarts the program (b) brings power and code (c) keeps the voltage steady (d) shows the board is on
12. 12.🤖 What is a microcontroller? (a) a big desktop computer (b) a type of battery (c) a computer on one chip (d) a kind of bulb
13. 13.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
14. 14.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a plain wall switch (c) a bicycle bell (d) a hand pump
15. 15.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it stops forever (d) it deletes itself
16. 16.Which of these usually has a microcontroller inside? (a) a washing machine (b) a wind-up toy (c) a spinning top (d) a bicycle bell
17. 17.Which of these usually has a microcontroller inside? (a) a smart watch (b) a hand pump (c) a candle (d) a bicycle bell
18. 18.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
19. 19.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
20. 20.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
21. 21.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the reset button (b) the power LED (c) the USB port (d) the voltage regulator
22. 22.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
23. 23.Which of these has no microcontroller inside? (a) a TV remote (b) a microwave oven (c) a washing machine (d) a candle
24. 24.True or false: a microcontroller runs one small program. (a) True (b) False
25. 25.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) a wall socket directly (d) USB or a 9 V battery
26. 26.True or false: a laptop uses very little power. (a) True (b) False
27. 27.Which of these usually has a microcontroller inside? (a) a candle (b) a digital alarm clock (c) a spinning top (d) a hand pump
28. 28.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
29. 29.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
30. 30.🧭 Which part of a microcontroller board restarts the program? (a) the main chip (b) the power LED (c) the reset button (d) the USB port
31. 31.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
32. 32.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
33. 33.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
34. 34.True or false: a laptop has no screen of its own. (a) True (b) False
35. 35.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
36. 36.True or false: a microcontroller runs many apps at once. (a) False (b) True
37. 37.True or false: a candle usually has a microcontroller inside. (a) False (b) True
38. 38.🧭 Which part of a microcontroller board brings power and code? (a) the voltage regulator (b) the USB port (c) the main chip (d) the pins
39. 39.True or false: a laptop has a built-in keyboard. (a) True (b) False
40. 40.True or false: a laptop runs many apps at once. (a) True (b) False

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