You see and use them every day, but do you know where they come from? Almost all common UI symbols have an interesting history behind them. Designers over at visual.ly came up with a great that will tell you more about your favorite icons, buttons and logos.
There is a reason why USB looks like a trident and the pause button consists of two vertically aligned bars. Surprisingly, origins of some of the most used UI symbols are in neither computer nor electronic industry, but in history, nature and psychology. It turns out that they are more universal than we think, with their roots often reaching various cultures and and being inspired by international symbolism. There's more to them than just a clever inclusion of their features, sometimes their shapes are supposed to impact the usage, make a suggestion or evoke an association.