I’m a geek so I have plenty things with power buttons.
Now lets take a look at some power button in the wild, i.e. Source & Details: Power Buttons In The Wild This required the creation of yet another symbol, which is the symbol that is now almost ubiquitous as the symbol used on power button of a device. This state is sometime called the “standby” or the “sleep” state, which allows the device to become available for interaction very quickly, while consuming extremely small amounts of power when not in use. Step 4 – Introduction of The “Standby” State: With further advancements in technology, devices had the capability of being an intermediate state, where they were neither on or off. This symbol was created by combining the 0 and 1 where the slightly smaller 1 was fitted inside a bigger 0. Hence, we now needed a single symbol to represent that button. Step 3 – Evolution to a Single Push Button: With advancements in technology, it was now possible to have a single push button which could switch between on and off. Hence, we had the same mechanical switch, but with a 0 and a 1, which looked more like a line and a circle. Step 2 – Universal Classic Toggle Switch: As technology became more ubiquitous, the words “On” and “Off” were replaced by more universal symbols 1 and 0 where 1 represented “On” and 0 represented “Off”. The two positions were marked with the words “On” & “Off” One had to physically move a level left/right or up/down to switch between on & off. Step 1 – Classic On/Off Toggle Switch: This was the classic mechanical On/Off switch.The following illustrations of various styles of switches over times helps explain how the current power symbol was created. Its not something that someone just fashioned out of the blue and everyone just went along with it. There is a reason and a purpose to the symbol. Instead, there is an interesting story of its evolution. We didn’t always use this symbol and this was not the first time a symbol for a power button was agreed upon. Have you ever wondered why this specific symbol represents the power button? I did, and then I went around my apartment looking at the power button of everything that could be switched on and found it to be a very interesting exercise. The image on the left is the universal symbol used to represent the power button on almost any devices these days.
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