xkcd #2818: Circuit Symbols
Title text: A circle with an A in it means that the circuit has committed a sin and has been marked as punishment....
![](https://kbin.cafe/media/cache/resolve/entry_thumb/b9/ea/b9ea0301ddabcdb5b9900ccd883f4343c3be5c45428edec6880cf9983143a360.png)
Title text: A circle with an A in it means that the circuit has committed a sin and has been marked as punishment....