Programming Guide for 64-bit Windows (Windows)Microsoft has released 64-bit versions of the Windows operating system. 64-bit Windows was designed with compatibility in mind. Developers can ensure that their existing 32-bit applications run well under 64-bit Windows or take advantage of the benefits of 64-bit Windows by migrating their applications. Benefits of 64-bit Windows A 64-bit operating system supports far more physical memory than a 3
