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Amrehn Hermann: Method and system for the automatic control of chemical plants with parallel-connected computer backup system. Chemische Werke Huls Aktiengesellschaft, January 18, 1972: US3636331 (70 worldwide citation)

A method and system for the automatic control and regulation of chemical processes in chemical plants using digital process computers which comprises operating at least two identical computers in parallel, each equipped with an operating core storage means (principal memory means) and a mass storage ...


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