 In the mid 1980s, Noran Engineering recognized the long term advantages and impact that the PC hardware revolution could have on the engineering analysis field and embarked on a project to significantly enhance and modernize the original NASTRAN code and port it to PCs.The first commercial version of NEi Nastran for use on PCs was released in 1990.The new code had a number of changes in architecture and programming language compared to legacy Nastran written originally for mainframes.