The Evolution of the Sperry Univac 1100 Series: A His tory, Analysis, and Projection The 1100 series systems are Sperry Univac's large-scale main frame computer systems. Beginning with the 1107 in 1962, the 1100 series has progressed through a succession of eight compatible computer models to the latest system, the 1100/80, introduced in 1977. The 1100 series hardware architecture is based on a 36-bit word, ones complement structure which obtains one operand from storage and one from a high-speed register, or two operands from high-speed registers. The 1100 Operating System is designed to support a symmetrical multiprocessor configuration simultaneously providing multiprogrammed batch, timesharing, and transaction environments. CACM January, 1978 Borgherson, B. Hanson, M. Hartley, P. 1100 computer series, computer architecture, multiprocessing languages, data management systems, end user facilities, executive control software 1.3 4.0 4.20 4.30 4.32 4.33 4.35 6.0 6.21 6.30 CA780104 JB March 28, 1978 5:38 PM 3026 5 3026 3026 5 3026 3026 5 3026