Design the CAN bus address encoder, communication terminal digital display circuit, control relay circuit, LNK501 switching power supply chip circuitry.

To address the above problems, this paper analyzes business process of terminal in large-scale harbor in detailed, and study key technologies of terminal management system transformation in-depth.

The method on the network side includes: learn that a terminal acquires the information about a work and determine the visit address that delivers the legal-copy work of the work to the terminal;