Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 257 · 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.True or false: a laptop has a built-in keyboard. (a) False (b) True
2. 2.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
3. 3.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the main chip (c) the reset button (d) the USB port
4. 4.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
5. 5.Which job is done by the main chip? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) keeps the voltage steady
6. 6.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
7. 7.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a smart watch (d) a bicycle bell
8. 8.Which of these has no microcontroller inside? (a) a washing machine (b) a smart watch (c) a digital alarm clock (d) a hand pump
9. 9.Which of these has no microcontroller inside? (a) a candle (b) a digital alarm clock (c) a toy robot (d) a TV remote
10. 10.Which job is done by the reset button? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) keeps the voltage steady
11. 11.True or false: a plain wall switch has no microcontroller inside. (a) True (b) False
12. 12.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
13. 13.Which job is done by the voltage regulator? (a) shows the board is on (b) keeps the voltage steady (c) runs the program (d) connect sensors and LEDs
14. 14.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a washing machine (c) a plain wall switch (d) a spinning top
15. 15.🤖 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
16. 16.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) typed on the chip (d) uploaded over USB
17. 17.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
18. 18.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) the board breaks (d) it deletes itself
19. 19.Which of these has no microcontroller inside? (a) a spinning top (b) a toy robot (c) a digital alarm clock (d) a digital thermometer
20. 20.Which of these usually has a microcontroller inside? (a) a candle (b) a TV remote (c) a wind-up toy (d) a hand pump
21. 21.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
22. 22.True or false: a laptop uses very little power. (a) False (b) True
23. 23.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
24. 24.Which of these has no microcontroller inside? (a) a microwave oven (b) a digital thermometer (c) a plain wall switch (d) a toy robot
25. 25.True or false: a washing machine has no microcontroller inside. (a) False (b) True
26. 26.Which of these usually has a microcontroller inside? (a) a digital thermometer (b) a hand pump (c) a candle (d) a bicycle bell
27. 27.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
28. 28.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the main chip (c) the pins (d) the power LED
29. 29.Which job is done by the power LED? (a) shows the board is on (b) runs the program (c) keeps the voltage steady (d) restarts the program
30. 30.🤖 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
31. 31.🤖 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
32. 32.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the main chip (c) the voltage regulator (d) the pins
33. 33.True or false: a microcontroller runs many apps at once. (a) True (b) False
34. 34.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
35. 35.Which job is done by the pins? (a) brings power and code (b) connect sensors and LEDs (c) keeps the voltage steady (d) shows the board is on
36. 36.True or false: a laptop runs many apps at once. (a) False (b) True
37. 37.Which of these usually has a microcontroller inside? (a) a smart watch (b) a wind-up toy (c) a bicycle bell (d) a hand pump
38. 38.True or false: a TV remote has no microcontroller inside. (a) False (b) True
39. 39.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
40. 40.True or false: a bicycle bell has no microcontroller inside. (a) False (b) True

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