最基础的提高是它采用了点到点的总线结构。

The most fundamental improvement is the adoption of point-to-point bus topology.

下位机的路口信号机基于STD总线结构，处理器采用了INTEL公司的MSC-89C51单片计算机。

The intersection controller is based on STD bus structure, its processor adopting MSC-89C51 monolithic computers of the INTEL company.

通过使用一个8位的单芯片和PCI总线结构，硬件加密卡的设计，这是直接插在总线。

By using a 8-bit single-chip and a PCI bus structure, a hardware encryption card was devised, which was directly inserted in the bus.