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Abstract During the pass few years, the computer technology has huge progress. The personal computer (PC) has lots of improvement in the performance of data processing, and in the capability of implementation multitasks and real-time system. In addition, PC can integrate multimedia devices and networks. As a result, it can replace parts of the work of minicomputer and workstation. The research integrates each PCs at the local area network to construct a distributed simulation system. The system includes the instruction station, simulators, and the hardware input/output subsystem. The hardware input/output subsystem uses plug-in interfaces. The dynamic data are displayed on the instrument panel by connecting the interface cards and panel items. The simulation system has some advantages as follows: 1. Integrating the through network communication to construct a distributed environment. Distribute tasks to different PC of the network, and process them at the same time, in order to improve the performance of data processing. 2. The interfaces adopt the open architecture. They are low price and easy to maintain. Plus, they have high extensionability and inter-operationabilty. 3. The graphical Man Machine Interfaces have high familiarity. They are easy to use. 4. Software Interfaces adopt open specifications. They are easy to be modified, and also have high extensionability. 5. I/O Subsystem that uses Graphic User Interfaces could largely reduce traditional instrument panel layout, and reduce the maintenance effort. Statistical Usage-based Model is used to perform the simulation system testing, including the PCTran model, which is responsible for the simulation calculation. Statistical Usage-based Model chooses the mostly used states to the Test Scripts. Seven Test Scripts are designed in this study, and successfully found the defects hidden in the system. The required modifications and advices have been written in the test report. The research also evaluates the transmission load of the network. Comparing the data transmission rate during the simulation with the Fast Ethernet transmission rate, it is found 10~ times data are allowed. Therefore, the constructed network provides enough transmission rate for data transfer.
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