4. This standard specifies the general, physical, and magnetic requirements for interchangeability of the one- and two-sided, high-density, 90-mm (3.5-in) (nominal) flexible disk cartridge for 15 916 bits-per-radian (bpr) use as required to achieve unformatted disk cartridge interchange among disk drives using 80 tracks per side and associated information processing systems. The one- and two-sided flexible disk enclosed ina protective case and having one or two recording surfaces is of the type intended specifically for use with digital recording and reproducing equipment employing access mechanisms capable of positioning to these data tracks. (See caution notice below).

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Specifies a flexible disk cartridge drive and defines the necessary functional and electrical requirements (including logic signals) and the mechanical requirements to the interface for the connection of conforming flexible disk drives to a host system. Upon adoption, ANSI X3.80-1988 will be withdrawn.

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Conforms to the requirements of CCITT Recommendation X.25, ISO 7776:1986, and ISO 8208:1987, and covers both the DTE/DCE and DTE/DTE interfaces.

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Establishes the syntax of BASIC programs written using individual character input, or modules, or both; the semantic rules for interpreting the meaning of a BASIC program that uses individual character input, or modules, or both; the errors and exceptional circumstances that shall be detected; and also the manner in which such errors and exceptional circumstances shall be handled.

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Specifies Physical Layer, Medium Dependent (PMD) requirements for the Fibre Distributed Data Interface (FDDI). The FDDI provides a high-bandwidth (100 Mbit/s) general-purpose interconnection among computers and peripheral equipment using fibre optics as the transmission medium. The FDDI may be configured to support a sustained transfer rate of approximately 80 Mbit/s (10 Mbyte/s). It may not meet the response time requirements of all unbuffered high-speed devices. The FDDI establishes the connection among many FDDI nodes (stations) distributed over distances of several kilometers in extent. Default values for FDDI were calculated on the basis of 1 000 physical connections and a total fibre path length of 200 km.

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The Graphical Kernel System (GKS), as described in ANSI X3.124-1985, specifies a language-independent nucleus of a graphics system. For integration into a programming language, GKS, is embedded in a language-independent layer obeying the particular conventions of that language. This document specifies such a language-dependent layer for the Ada language. 9. Order From: NCITS Storefront: http://www.cssinfo.com/cgi-bin/basket?action=add&item_id=56146

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This Standard defines the programming language APL and the environment in which APL programs are executed. Its purpose is to facilitate interchange and promote portability of APL programs and programming skills.

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This International Standard specifies the syntax and semantics of COBOL. Its purpose is to promote a high degree of machine independence to permit the use of COBOL on a variety of data processing systems.

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Specifies the syntax and semantics of COBOL. Its purpose is to promote a high degree of machine independence to permit the use of COBOL on a variety of data processing systems.

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This part of ISO/IEC 9529 specifies the track layout, the track format and the characteristics of the recorded signals.

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