IBM System/360 Model 91
The IBM System/360 Model 91 was announced in 1964 as a competitor to the CDC 6600. The Model 91 runs functionally like any other large scale System/360 but the internal organization is the most advanced and it was the first IBM computer supporting out-of-order instruction execution. It ran OS/360 as its operating system. It was designed to handle high-speed data processing for scientific applications. This included space exploration, theoretical astronomy, sub-atomic physics and global weather forecasting. There were only 15 Model 91's ever produced, 4 of which were for IBM's personal use.
IBM System/360 Model 91
The IBM System/360 Model 91 was announced in 1964 as a competitor to the CDC 6600. The Model 91 runs functionally like any other large scale System/360 but the internal organization is the most advanced and it was the first IBM computer supporting out-of-order instruction execution. It ran OS/360 as its operating system. It was designed to handle high-speed data processing for scientific applications. This included space exploration, theoretical astronomy, sub-atomic physics and global weather forecasting. There were only 15 Model 91's ever produced, 4 of which were for IBM's personal use.