11. Because ReplayTV is an interactive system , it offers several potential selling points for advertisers. 12. Hence, the memory and the environment form an interactive system that causes our behavior. 13. He sold doctors and drug companies on an interactive system similiar to Channel One. 14. In an interactive system this was clearly not appropriate. 15. Two-way interactive systems to offer hundreds of new channels, high-speed Internet access and telephone service. 16. He co-founded his first company, Cambridge Interactive Systems Ltd . ( CIS ) in 1977. 17. Last year, the company was seen as lagging in the testing of an interactive system . 18. "The highly interactive systems allow viewers to look at precisely what they want, " she added. 19. Time requirements are particularly important in interactive systems . 20. Newman has since worked as a consultant, advising a number of organisations on interactive systems design.