Is your company paying onerous license and support fees for the hardware and software needed to run old fortran programs , along with special electrical power and ventilation that vintage minicomputers often require 您的公司除了为过时的小型计算机通常需要的特殊电能和通风付费以外，是否还要为运行旧的fortran程序所需的软硬件支付繁重的许可证费用和支持费用？
Das ( dispatch automation system ) has been installed in different levels of dispatching centers in power system , especially which are based on micro - computers . because of its high performs / price ratio , das can be used on regional and provincial dispatching center 电力系统的各级调度中心已经比较普遍地设置了调度自动化系统，特别是采用了以微型机算机和小型计算机为基础的调度自动化系统，以它的高性能价格比，在地方调度中心和省级调度中心等得到了广泛应用。
Nevertheless , they can be divided into several categories on the basis of cost and performance : the personal computer or microcomputer , a relatively low - cost machine , usually of desktop size ( though “ laptops ” are small enough to fit in a briefcase , and “ palmtops ” can fit into a pocket ) ; the workstation , a microcomputer with enhanced graphics and communications capabilities that make it especially useful for office work ; the minicomputer , generally too expensive for personal use , with capabilities suited to a business , school , or laboratory ; and the mainframe computer , a large , expensive machine with the capability of serving the needs of major business enterprises , government departments , scientific research establishments , or the like ( the largest and fastest of these are called supercomputers ) 然而，根据成本与性能，它们可分为几类：个人计算机或微型计算机，一种成本相当低的机器，通常只有桌面大小（尽管“膝上型计算机”小到能够放入公文包，而“掌上型计算机”能够放入口袋） ；工作站，一种具有增强的图形与通信能力、从而使其对于办公室工作特别有用的微型计算机；小型计算机，一般就个人使用而言太昂贵，其性能适合于工商企业、学校或实验室；以及大型机，一种大型的昂贵机器，具有满足大规模工商企业、政府部门、科研机构或者诸如此类机构需要的能力（其中体积最大、速度最快的称为巨型计算机） 。
