SPEEDY lacked the optimization feature, represented by the 'O' in the COMPACT acronym, but included a large s-parameter database with the all Fairchild's bipolar and GaAs microwave transistors.
This second-generation program, COMPACT, included circuit optimization capability and noise analysis, a wide range of active and passive microwave components, and was offered through five different international time-sharing systems.
"[5][citation needed] In 1980, Compact merged with Communication Satellite Corporation (COMSAT), creating a new division with Besser heading the microwave CAD development.
SuperCOMPACT enjoyed worldwide monopoly with nearly 400 international companies using it through timesharing as well as on-site installation in large-scale mainframes as well as mini-computers.
In 1983, another key Compact employee, William Childs, left and teamed up with Chuck Abronson to form a new software company, EEsof.
Stephen W. Director introduced advanced optimization algorithms and yield-driven design, thus improving reliability and accuracy of microwave models.