Z

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Z,

26th and last letter of the alphabetalphabet
[Gr. alpha-beta, like Eng. ABC], system of writing, theoretically having a one-for-one relation between character (or letter) and phoneme (see phonetics). Few alphabets have achieved the ideal exactness.
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, representing the voiced correspondent of voiceless s, as in the English zebra. Its original is the Greek zeta, which the Romans borrowed and added to their alphabet.

Z

/zed/ <language, specification> 1. (After Zermelo-Fr?nkel set theory) A specification language developed by the Programming Research Group at Oxford University around 1980. Z is used for describing and modelling computing systems. It is based on axiomatic set theory and first order predicate logic. Z is written using many non-ASCII symbols. It was used in the IBM CICS project.

See also Z++.

["Understanding Z", J.M. Spivey, Cambridge U Press 1988].

2. <language, simulation> A stack-based, complex arithmetic simulation language from ZOLA Technologies.

Z

A mathematical language used for developing the functional specification of a software program. Developed in the late 1970s at Oxford University, IBM's CICS software is specified in Z.