Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 198 · 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 usually has a microcontroller inside? (a) a plain wall switch (b) a spinning top (c) a candle (d) a washing machine
2. 2.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
3. 3.Which job is done by the main chip? (a) runs the program (b) brings power and code (c) restarts the program (d) keeps the voltage steady
4. 4.Which job is done by the USB port? (a) restarts the program (b) brings power and code (c) runs the program (d) connect sensors and LEDs
5. 5.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
6. 6.True or false: a laptop needs much more power. (a) True (b) False
7. 7.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) uploaded over USB (c) sent by sound (d) drawn with a pen
8. 8.True or false: a laptop runs many apps at once. (a) True (b) False
9. 9.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
10. 10.Which job is done by the reset button? (a) restarts the program (b) shows the board is on (c) connect sensors and LEDs (d) runs the program
11. 11.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a type of battery (d) a computer on one chip
12. 12.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
13. 13.Which of these has no microcontroller inside? (a) a toy robot (b) a digital thermometer (c) a spinning top (d) a washing machine
14. 14.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the main chip (c) the pins (d) the voltage regulator
15. 15.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) bare mains wires (c) a 230 V cable (d) USB or a 9 V battery
16. 16.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
17. 17.True or false: a microcontroller has a built-in keyboard. (a) True (b) False
18. 18.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) the board breaks (d) it deletes itself
19. 19.Which of these usually has a microcontroller inside? (a) a toy robot (b) a wind-up toy (c) a hand pump (d) a bicycle bell
20. 20.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a digital alarm clock (d) a wind-up toy
21. 21.Which of these usually has a microcontroller inside? (a) a hand pump (b) a wind-up toy (c) a spinning top (d) a microwave oven
22. 22.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
23. 23.🧭 Which part of a microcontroller board runs the program? (a) the pins (b) the reset button (c) the USB port (d) the main chip
24. 24.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
25. 25.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
26. 26.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
27. 27.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
28. 28.True or false: a microcontroller uses very little power. (a) False (b) True
29. 29.True or false: a toy robot has no microcontroller inside. (a) False (b) True
30. 30.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the main chip (c) the pins (d) the USB port
31. 31.Which of these has no microcontroller inside? (a) a toy robot (b) a washing machine (c) a bicycle bell (d) a smart watch
32. 32.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
33. 33.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
34. 34.Which job is done by the pins? (a) restarts the program (b) runs the program (c) connect sensors and LEDs (d) shows the board is on
35. 35.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
36. 36.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
37. 37.Which job is done by the power LED? (a) runs the program (b) keeps the voltage steady (c) shows the board is on (d) restarts the program
38. 38.True or false: a microcontroller runs many apps at once. (a) False (b) True
39. 39.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) brings power and code (c) restarts the program (d) shows the board is on
40. 40.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False

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