After that, based on the PCNC system adopted software NC dos application, the detailed design and development process of DNC system is put to study. Under this background, the whole system architecture and related techniques are mainly discussed.

• 再次，介绍了PCNC系统的发展现状、软硬件结构，同时结合PCNC和DNC各自的特点及发展趋势研究了PCNC环境下DNC的组建方案，并针对多台基于DOS数控软件的PCNC系统这一具体环境，详细叙述了其DNC系统的总体设计方案、软件开发及其关键技术等。