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We know that computers can be used for work, study, entertainment, etc. In addition to the necessary computer hardware, software is also needed. Usually, we call a computer with only hardware but no software "bare metal", which cannot do any meaningful work. At present, software can be divided into two categories according to its use: system software and application software. System software is a program designed for computer systems to efficiently use and manage computer software and hardware resources and support the operation of application software. Such as operating systems, programming languages and language processing programs, network system software, system service programs, etc. Among them, Windows operating system is what we often use. Application software is a variety of programs that are user-oriented and written to solve practical problems. It can be written by users themselves or purchased. For example, office XP, Photoshop, Red Alert and so on, which we often use.According to the memory of Liu Guangyuan, a soldier who personally participated in the battle that year:The utility model will be further described below with reference to the accompanying drawings.Heilongjiang Province易亦秋、秦也、陶燕儿三个女孩是大学同 班同学。这一年，三人毕业，都选择了留 在北京。三个女孩感情甚好，成天腻在一 起，但性格及生活方式却截然不同。秦也 一心扑在学业上，在各个职场辗转，为成 就自己的事业，让家人过上富足的生活而 努力。陶燕儿一毕业便与富二代男友宋泽 飞过上了属于自己的小日子，世界里唯有 爱情和友情，在外人看来，满是幸福和无 虑，只有自己才体会到内心的空虚与落寞 。而易亦秋，虽有众多追求者，却始终不 如意，一次次受伤和失望，却还是坚定目 标，拒绝将就。就这样，三个女孩一起成 长。面对工作、爱情与自我的各种经历， 友情也在不断深化。三个女孩携手走过22 —32岁最美好的青春十年，历经波折和艰 辛，终于圆了自己的青春梦想。冰儿见了。