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Magnetic tape is a medium for magnetic recording, made of a thin, magnetizable coating on a long, narrow strip of plastic film. It was developed in Germany in 1928, based on magnetic wire recording. Devices that record and play back audio and video using magnetic tape are tape recorders and video tape recorders respectively. A device that stores computer data on magnetic tape is known as a tape drive.
A tape drive is a data storage device that reads and writes data on a magnetic tape. Magnetic tape data storage is typically used for offline, archival data storage. Tape media generally has a favorable unit cost and a long archival stability.
Systems Network Architecture (SNA) is IBM's proprietary networking architecture, created in 1974. It is a complete protocol stack for interconnecting computers and their resources. SNA describes formats and protocols and is, in itself, not a piece of software. The implementation of SNA takes the form of various communications packages, most notably Virtual Telecommunications Access Method (VTAM), the mainframe software package for SNA communications.
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Viatron Computer Systems, or simply Viatron was an American computer company headquartered in Bedford, Massachusetts, and later Burlington, Massachusetts. Viatron coined the term "microprocessor" although it was not used in the sense in which the word microprocessor is used today.
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References
- 1 2 IBM Corporation (1961). IBM 7702 Magnetic Tape Transmission Terminal (PDF). p. 00.
- ↑ Pugh, Emerson W.; Johnson, Lyle R.; Palmer, John H. IBM's 360 and Early 370 Systems. Cambridge, MA.: The MIT Press. pp. 601. ISBN 0-262-16123-0.
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