Such tools are beginning to make their way into development of critical software systems.
It gives a basis for analysis of software systems' behavior before the system has been built.
Their idea was to develop a new software system for personal computer users.
"The first software systems cost approximately $300,000 and up," he said.
A software system may be seen as a set of information transformations.
"Without the software system, there would have been no connection," she said.
A number of individual proprietary software systems have been developed starting in the early 1980s.
The ground system development activities create and maintain the software systems that are needed to provide these services to the astronomy community.
The latter are software systems designed for use by health care providers.
One said the company spent money needlessly for software systems.