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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.魏铁点头，又问道：王爷，这豆腐……要如何带回去？怕都弄碎了。{三人跟着脚印，发现很多奇诡的事情，鞋印居然飞上三米高的墙头。一跃三米高，这是什么人？脚印居然跃过七米远的沟壑，闽玥越发觉得诡异。三人费尽心血奔波，跟着脚印走到一个小山谷，三人，一只大雁正挣扎着啄开脚上的大鞋子。三人明白自己被耍了。【2020年日剧番外】《顶尖手术刀 -天才护士的条件-》是有些不受关注。《行尸之惧》尚未播出就已经获得第二季续订。