Latest IBM Stories
Enhanced capabilities help B2B clients deploy advanced digital storefronts in minutes with no technical skills or expertise ARMONK, N.Y., Nov.
Public-private partnership will center on analytics and higher education solutions COLUMBIA, S.C., Nov.
New Bluemix Dedicated and private API tools help developers securely build, test and deploy hybrid cloud applications ARMONK, N.Y., Nov.
IBM and researchers collaborate to accelerate analysis and prediction of climate changes from months to minutes TORONTO and EDMONTON, Nov.
Enterprises such as Nationwide Insurance and Pearson VUE dramatically improve software quality and delivery times ARMONK, N.Y., Nov.
Data and analytics to help increase efficiency and citizen satisfaction BARCELONA, Spain, Nov.
New application provides access to real-time data for law enforcement officials when they are in the field - away from their vehicle or office terminals ARMONK, N.Y., Nov.
Technology Vendors to Discuss the Impact of the Cloud on Business Solutions and Strategies WESTBOROUGH, Mass., Nov.
Patented Privacy Engine Safeguards Data Shared Across Borders BRUSSELS, Nov.
New ZPSaver Suite and Release of MFX Sort for z/OS Extend zIIP Offload and Exploit Latest Advancements in Mainframe Technology WOODCLIFF LAKE, N.J., Nov.
A direct access storage device, or DASD, is a secondary storage device in mainframe computers that has low access time for all of its capacity. The term DASD was introduced by IBM to describe disk drives, magnetic drums, and data cells. The direct access capability of those devices was quite different than that of sequential access used in tape drives because it required a substantially long time to access a distant point in a medium. IBM computers access devices through channels, which are...
A control store is the element of a CPUs control unit that stores the CPU's micro program and is usually accessed by a micro sequencer. A control store is usually executed as a diode-selection of read-only memory. This tradition dates back to 1947 when the program timing matrix on the MIT Whirlwind was initially introduced. The earliest models of IBM mainframe had read-only control store; however, the System/370 and successor models were made and loaded their micro programs from floppy disks...
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