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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.可爱而又有点喜欢搞怪的瑞贝卡·布鲁姆伍德（艾斯拉·费舍尔饰）是个地道的纽约客。瑞贝卡喜欢纽约的繁华和时尚，而她最大的能耐就是购物，也就是说，她是个现代社会造就的怪物——购物狂。当她的购物热情被一个Gucci包或者Prada鞋激发的时候，没有任何人能阻止她刷卡，到头来，她的信用卡总是被刷爆，她因此负债累累。可是这个时候，他已经没心思去追究这些事情了。抖开粮食包，点燃麻袋，于是连在一起的小船上也冒烟了。　　李菲菲的形体老师余倩倩为其立报撼不已，在会场上，她的独特气质打动了评委、年轻有为的留法时装设计师蓝浩。蓝浩经过余倩倩的投资人、香港著名融资专家宋东明介绍女律师林楚翘（林青霞 饰）即将移民加拿大，却在临行前收到一封恐吓信。信中威胁林支付100万，否则将其伪造假遗书的丑行公之于众。林经过一番试探，怀疑为其亲信阿May（王小凤 饰）所为。阿May早年随林打拼，如今却因学历问题而无法移民，怀恨在心的她发出恐吓信。在被林怀疑后，她悬崖勒马，决定收手。