Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
I have been a principal at Ashdar Partners since 2003, a SQL Server DBA since 1998, a developer since the 1980s and a nerdy computer enthusiast since the 1970s. I've probably used more obsolete computer systems than you have.