TIS (Technology Information System) is being used at the Lawrence Livermore National Laboratory (LLNL) to develop software for Intelligent Gateway Computers (IGC) suitable for the prototyping of advanced, integrated information networks. Dedicated to information management, TIS leads the user to available information resources, on TIS or elsewhere, by means of a master directory and automated access procedures. Other geographically distributed information centers available through TIS include six federal and commercial systems in the United States, one in France, and one in West Germany. This overview of the system summarizes the following aspects of TIS: (1) Automated Access Procedures; (2) Creation of Program-Dependent Information Systems; (3) Data Analysis and Modeling; (4) Communications; (5) The META-MACHINE User Interface; (6) Technology Transfer; (7) Information Networks; (8) Integrity and Security; (9) Future Plans; and (10) Acknowledgements and Sponsors. The text is supplemented with diagrams and illustrations, and 17 references are provided. (KM)