Issue No.07 - July (1976 vol.9)
A.I. Rubin , Electronic Associates, Inc.
Simply defined, a hybrid computer is the sophisticated combination of a real-time interrupt-oriented digital computer with one or more parallel analog processors. Each device is used so as to exploit its own best advantage toward the orderly, rapid solution of the problem at hand in a synergistic manner. This typically involves the preparation and use of mathematical models that dynamically describe the system being studied, using both algebraic and differential relations.
A.I. Rubin, "Hybrid Computation 1976 and Its Future", Computer, vol.9, no. 7, pp. 37-46, July 1976, doi:10.1109/C-M.1976.218644