Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 246 · 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.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
2. 2.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
3. 3.True or false: a microwave oven has no microcontroller inside. (a) False (b) True
4. 4.Which of these has no microcontroller inside? (a) a washing machine (b) a digital alarm clock (c) a toy robot (d) a hand pump
5. 5.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a hand pump (d) a microwave oven
6. 6.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
7. 7.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) drawn with a pen (d) uploaded over USB
8. 8.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
9. 9.Which of these has no microcontroller inside? (a) a microwave oven (b) a spinning top (c) a washing machine (d) a TV remote
10. 10.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
11. 11.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
12. 12.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
13. 13.Which job is done by the power LED? (a) restarts the program (b) shows the board is on (c) brings power and code (d) keeps the voltage steady
14. 14.Which of these has no microcontroller inside? (a) a microwave oven (b) a TV remote (c) a wind-up toy (d) a toy robot
15. 15.True or false: a TV remote has no microcontroller inside. (a) False (b) True
16. 16.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the voltage regulator (c) the pins (d) the main chip
17. 17.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the main chip (c) the pins (d) the power LED
18. 18.Which job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) connect sensors and LEDs (d) brings power and code
19. 19.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
20. 20.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
21. 21.Which job is done by the pins? (a) connect sensors and LEDs (b) keeps the voltage steady (c) restarts the program (d) runs the program
22. 22.True or false: a laptop has a built-in keyboard. (a) False (b) True
23. 23.True or false: a microcontroller uses very little power. (a) True (b) False
24. 24.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a candle (d) a toy robot
25. 25.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the power LED (c) the pins (d) the reset button
26. 26.Which of these usually has a microcontroller inside? (a) a hand pump (b) a plain wall switch (c) a bicycle bell (d) a digital thermometer
27. 27.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a washing machine (d) a wind-up toy
28. 28.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the USB cable (c) the power LED (d) flash memory
29. 29.True or false: a laptop has no screen of its own. (a) False (b) True
30. 30.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) USB or a 9 V battery (d) a 230 V cable
31. 31.True or false: a microcontroller runs many apps at once. (a) True (b) False
32. 32.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a spinning top (d) a TV remote
33. 33.🤖 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
34. 34.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
35. 35.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
36. 36.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) restarts the program (c) keeps the voltage steady (d) brings power and code
37. 37.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the voltage regulator (b) the USB port (c) the reset button (d) the pins
38. 38.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
39. 39.🤖 What is a microcontroller? (a) a kind of bulb (b) a computer on one chip (c) a type of battery (d) a big desktop computer
40. 40.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True

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