It’s plastered on T-shirts; it tells you which button will start your Prius; it’s even been used on NYC condom wrappers. As far back back as WWII engineers used the binary system to label individual power buttons, toggles and rotary switches: a 1 meant “on,” and a 0 meant off. 

它被貼在襯衫上、它告訴你哪個按鈕可以啟動你的Prius、它甚至被用在紐約安全套包裝上。早在二戰時期,工程師使用二進位來標示獨立的電源按鈕、切換開關或是旋鈕。1代表「開」,0代表「關」。

In 1973, the International Electrotechnical Commission vaguely codified a broken circle with a line inside it as “standby power state,” and sticks to that story even now. The Institute of Electrical and Electronics Engineers, however, decided that was too vague, and altered the definition to simply mean power. Hell yeah, IEEE. Way to take a stand. 

在1973年,ICE含糊地定義一個有缺口的圓加上一條線在圓內,作為「電源待命狀態」,並且堅持此說法直到現在。不過IEEE的工程師覺得那種說法太含糊不清,並將其重新定義為單純的「電源」。

via The Secret Histories of Those @#$%ing Computer Symbols