Design And Research Of WT8820, Windows-based Terminal

A new terminal-Windows-based Terminal(WBT) ,Which is based on theServer of Windows 2000 Server/Advanced Server in Thin-Client/Server network system, are roundly described. At first, the origin, development and actuality of WBT are narrated, and the insufficiencies of serial port are pointed out. Then, WT8820, which is a WBT with four serial ports, is put forward according to the insufficiencies. In succession, the network, hardware system and software system are introduced. And the design proposal, performance of the WT8820 and the rough design steps are put forward. Drawing the schematic circuit diagram with ORCAD Capture and designing the pcb with PADS PowerPCB are briefly introduced. The working principles are described and machine is roundly tested in details. In experiment, the functions of the mainboard and the machine in network are tested. The output voltage, transmitting/receiving data, and the ability to drive device of the WT8820's serial ports are verified. The results indicate that the design is successful. WT8820 settles the problems of existing WBT and caters to the users, it also adds the diversity of WBT. In a ward, WT8820 is a well performance terminal machine.