Annotation

Annotation: The purpose of the work is to study information units as the basis for standardizing information exchange. The content of the information exchange is revealed. The existence of two types of standards is described: normative and unofficially recognized. The content of information units as elements of information models and information systems is described. examples of the standardized use of information units are considered on the example of cartography and geoinformatics. The difference between parametric and compositional information models is shown. Compositional models are based on the use of alphabetic writing. The role of the alphabet in compositional models is played by information units. The article shows the difference between the natural language alphabet and groups of information units. The article recommends developing the direction of information units as a means of standardizing information exchange.