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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.听到云青山的话，尤其是后面那四个字——巴蜀琴氏的时候众人心中都是一震。他不敢面对郑氏，怕撑不住，说不定会哭着喊娘。他一面派人回王府报信，一面急匆匆进宫觐见新君。上海滩刀光剑影，人人为追求自身利益不择手段，三分天下的局面亦逐步分裂。随后日军大举侵华，上海沦陷，乔傲天、龚啸山、翟金棠三兄弟终归各走各路。走在乱世之中，谁又能成为上海滩最后的赢家？