We have developed a frame work representing VLSI technologies on computer, of which details have been already stated in the main text of this review for Computer Devices Laboratories. PARADISE can represent the topographic structure of LSI devices using GDS-II format data converted from the layout editor. PARAM is introduced for extracting SPICE parameters from a process device simulator for a circuit simulation. ICCAP is also applied in extracting SPICE parameters from real MOS devices. Now the physical structure and the electronic characteristics of VLSI can be perfectly represented on computer. The VLSI architecture will be also represented on computer using HDL language in near future.
The VLSI manufacturing system has been also represented on computer. PLANT, PLANning resources for VLSI manufacturing planT, is the name of a representing system of VLSI facilities. This program is developed by modifying the queueing model in estimating two or more kinds of resources required for production. A batch treatment in processing and a skill level of operators can be managed in the estimation. The paper related to this program will be appeared in Trans. on IEICE, 1996.