A system architecture based on Transputer networks for parallel blackboard model is presented

where an item called "blackboard-relay"is proposed.As a result

parallelism and modularity have been improved as compared with traditional blackboard models.Based on the architecture

a realtime blackboard model testbed-CPES is implemented

and a parallel expert system tool language-V languge is designed which supports kinds of blackboard testbed operations.Consequently

performances of CPES such as problem solving time and overheads at the parallel executing state have been tested and useful results have been reached

which show good features and performances of CPES as a real-time blackboard model testbed.