The description goes like –
Bill Gates announced the Windows project in 1983, but Microsoft’s first graphical user interface — Windows 1.0 — wasn’t released until November 1985, nearly two years after Apple introduced the Mac. Due to legal issues with Apple, Gates couldn’t include key features like overlapping windows and a trash can. Looking at it now, it’s not surprising it was a flop. Windows 1.0 was more an extension of MS-DOS than its own operating system, but it did allow limited multitasking and mouse support.
And here is the Windows 1.0 –
For the evolution of windows, visit A History of Microsoft Windows.