Methodic of legacy information systems handling

In this article a method of legacy information systems handling is offered. During professional activities of specialists of various domains of industry they face with the problem that computer software that was involved in product development stage becomes obsolete much quickly than the product itself. At the same time switch to any modern software might be not possible due to various reasons. This problem is known as «legacy system» problem. It appears when product lifecycle is sufficiently longer than that of software systems that were used for product creation. In this article author offers an approach for solving this problem along with computer application based on this approach.