How power symbol evolved?

The well known on/off power symbol was the result of the logical evolution in user interface design. Originally, most early power controls consisted of switches that were toggled between two states demarcated by the words On and Off. As technology became more ubiquitous, these English words were replaced by the universal numeral symbols 1 and 0 (typically without serifs) to bypass language barriers. This “1” and “0” standard is still used on toggle power switches.

To create the symbol for a single on/off button, the “1” and “0” symbols were super-imposed onto each other to create the universally recognized power symbol used today.

One thought on “How power symbol evolved?

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