This paper is devoted to research on multi-architectural computing supersystems, analysis and prospects for their development. Research, begun in the early 90s, was a continuation of work on the SS BIS Electronics system. At each stage, the task was set to develop the optimal architecture of the computing supersystem for the current state of the technological base. However, the fundamental principles of building a system are still relevant at the present time. The project is based on the concepts of multi-architecture, mutual adaptation of architecture and programs, problem orientation of basic computing tools, functional specialization of auxiliary computing tools, specialization of intrasystem networks and hierarchical system construction.