｢ Most VA medical facilities manage health records using a suite of tools launched by the US government in 1997 called the Computerized Patient Record System (CPRS). But it works on top of an even older system called VistA – not to be confused with the Windows Vista operating system – which first debuted in 1985 and was originally built on the operating system MS-DOS ｣
https://www.bbc.com/future/article/20250516-the-people-stuck-using-ancient-windows-computers