The Microsoft Windows that uses 32-bit applications (e.g. Win95/98/ME/NT/XP). Most of the applications built from 1995 on were developed for a 32-bit architecture. This means they can perform more computations with more complex figures.
The programming platform that comprises of Windows 9x, Windows Milennium, Windows NT and Windows 2000. Programs written for win32 will, with a few exceptions, run on all these systems. They will not run on Windows 3.x.