de facto standard Last modified: Thursday, February 25, 2010
A format, language, or protocol that has become a standard not because it has been approved by a standards organization but because it is widely used and recognized by the industry as being standard. Some examples of de facto standards include: Hayes command set for controlling modems Kermit Communications Protocol Xmodem Communications Protocol Hewlett-Packard Printer Control Language (PCL) for laser printers PostScript page description language for laser printers The QWERTY system for typewriters and keyboards
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Related Terms

Hayes-compatible Kermit PCL PostScript QWERTY keyboard standard Xmodem

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