An integrated circuit is designed by determined the devices comprising the integrated circuit and determining the desired parameters for each device. A flow of process steps is determined and the 1-D and 2-D simulations are performed on the process flow. The process steps are modified until the simulations...http://www.google.com.au/patents/US5319564?utm_source=gb-gplus-sharePatent US5319564 - Method and apparatus for integrated circuit design