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On personal computers, there are five most commonly used operating systems: DOS, Windows, Unix/Xenix, and OS/2. DOS System-In the 17 years since its inception in 1981, DOS has undergone 7 major version upgrades, from version 1.0 to version 7.0 now, continuously improving and perfecting. Windows System-Windows is the first generation of window visual interface published by Microsoft in November 1985, which makes PC enter the so-called GUI (Graphical User Interface) stage. Unix system. Unix systems were initially used on small and medium-sized computers. Unix is a multi-user system, which generally requires more than 8M of memory and a large capacity of hard disk. Linux system-Linux is the largest free software in the world at present. It is an operating system with functions comparable to UNIX and Windows and has complete network functions.Updated koKR localization file;还有一个便是东阿阿胶，在后世可是大大有名的滋补品。美国海军陆战队中士罗根提伯特结束他第三期在伊拉克的战斗任务后返回美国，身上带着一件他相信是保佑他在多场无情战火中得以幸存的幸运物，那是一张陌生女子的照片。经过不断的四处打听之后，罗根终于知道她的名字─贝丝及她的住处，想要向她道谢的罗根于是出现在她的家门口，阴错阳差地在她家所经营的动物旅社工作。尽管她最初对他并不信任以及她颇为复杂的环境背景，他们俩仍不顾一切地展开恋情，罗根开始希望贝丝不仅只能当他的幸运符，他更希望自己能尽一切力量保护这个日常生活中饱受威胁的女人。Console.log ("I am the technical director of Baidu");Everyone has a god of death