虽然计算机技术已经出现并被认可了大约25年，但在建筑系统设计领域使用这项技术并没有得到人们曾经预期的广泛认可。这种不被接受的原因似乎是建筑系统行业是一个松散的、高度竞争的团队工作，因此，可能有财力开发项目的大公司通常不是最终决策者。这个职位通常由较小的公司实体，即专业顾问来填补。所使用的系统选择和分析技术一直处于动态变化阶段。第二次世界大战后的几年里，该行业发展如此迅速，以至于主要的设计参数一直是在降低初期成本的前提下，通过外围努力实现舒适性能。 因此，不仅许多其他重要参数没有被识别，甚至性能的基本参数也没有通过识别相关算法得到很好的量化。设计行业的从业人员没有接受过计算机技术的使用方面的教育，因此在再教育过程中进展缓慢，特别是考虑到他们可以通过继续照常行事继续实现“成功”的设计（基于唯一的“性能”参数）。在过去五年之前，计算机硬件的发展似乎集中在基本的计算机控制台上，一代又一代的机器旨在提高计算和打印输出的速度，并增加容量。在过去五年之前，数据通信几乎没有发展。 引文:华盛顿州西雅图ASHRAE学报第82卷第2部分研讨会

Although computer technology has been available and recognized for about two and a half decades, the use of this technology in the field of building systems design has not gained the broad acceptance which was once anticipated. The reasons for this lack of acceptance appear to beThe building systems industry is a loosely knit highly competitive team effort, and as a result, the large corporations who might have the financial resources to develop programs are not generally in the position of the final decision maker. This position is usually filled by the smaller corporate entities, the professional consultants.The systems selection and analysis techniques used have been and still are in a dynamic stage of change. The industry has grown so rapidly in the years following World War II that the major design parameter has been to achieve comfort performance with peripheral efforts at reductions in first costs. Thus, not only had many other significant parameters not been identified, but even the fundamental one of performance had not been well quantified by recognition of the relevant algorithms.The practitioners in the design profession had not been educated in the use of computer technology and, as a result, were slow in the process of re-education, particularly in view of the fact that they could continue to achieve" successful" designs (based upon the sole "performance" parameter) by continuing to do business as usual.Computer hardware development prior to the past half decade appeared to concentrate on the basic computer console, with generaticn after generation of machinery aimed at increasing the speed of calculation and printout and increasing the capacity. Little development in data communications took place prior to the last five years.