In the late 1970s, the IBM 3730, a word-processing variant of the IBM 3790 was announced. IBM 3790 was a Computer system announced in the early 1970s, one of the first distributed computing platforms It used 3790 hardware but its software made it a dedicated shared-logic word-processing system which could support a dozen or more word-processing IBM 3732 terminals. The IBM 3732 is a word-processing terminal derived from the IBM 3270 family of terminals from IBM.
It could be connected using Systems Network Architecture to a central mainframe running IBM DISOSS which was a centralized document exchange software running on CICS. Systems Network Architecture ( SNA) is IBM 's proprietary networking architecture created in 1974 DISOSS (acronym for ( DIS tributed O ffice S upport S ystem is a centralized document distribution and filing application for IBM 's CICS ( Customer Information Control System) is a Transaction server that runs primarily on IBM mainframe systems under Z/OS and Z/VSE