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小型分布计算机网络(简称小型DGCNET)的体系结构采用分层法构造。网络中物理层、数据链路层、网络层、文件传送层等四层协议的功能,是靠全网内各种计算机的硬、软件配合完成的。小型DGCNET物理层的主要工作是解决网络内参加通信的物理实体如何进行连接,并正确地发送和接收最原始的二进制数据“0”和“1”。为了完成物理层的这些功能,我们在设计和实现时必须充分考虑参与收发原始数据实体的整体结构和其它有关因素。
The architecture of a small distributed computer network (DGCNET for short) uses a layered approach. Network physical layer, data link layer, network layer, file transfer layer four-layer protocol functions, is based on the entire network of various computer hardware and software to complete. The main work of the small DGCNET PHY layer is to resolve how the physical entities involved in the communication within the network are connected and correctly send and receive the original binary data “0” and “1”. In order to accomplish these functions of the physical layer, we must fully consider the overall structure of participation in sending and receiving original data entities and other related factors when designing and implementing.