(Enterprise System Architecture) An IBM mainframe computer introduced in 1988. Successor to the IBM 370XA had enhanced access registers that allowed access to other forms of virtual memory. This enhancement allowed more data storage in main and virtual memory, reducing I/O operating and improving speed and efficiency. The IBM 370ESA was rebranded as the IBM390, and later as the zSeries.
- Ibm 370xa
computer, IBM An IBM mainframe computer introduced in 1983. Successor to the System/370, this machine had an enhanced address space. (2004-05-27)
- Ibm 3720
hardware A communications controller made by IBM, suitable for use in an IBM S/390. Official service support was withdrawn in 1999 in favour of the IBM 3745. (http://ibm.com/search?q=3720&realm=Networking). (2000-02-21)
- Ibm 650
computer A computer, produced ca. 1955 and in use in the late 1950s, with rotating magnetic drum storage and punched card input. Its memory words could store 10-digit decimal numbers and each instruction had two addresses, one for the operand and one for address of the next instruction on the drum. SOAP was its (optimising) […]