Released on August 1981 This OS Cost $40 USD Microsoft Disk Operating System developed by Microsoft for IBM. This was the first OS by Microsoft.
Released on November 20, 1985 This OS Cost $99 USD Microsoft named this version Windows 1.0 due to the computing boxes
Released on December 9, 1987 This OS Cost $100 USD This version comes with desktop icons, keyboard shortcuts and improved graphics support.
Released on May 22, 1990 This OS Cost $149.95 USD This version comes with new icons, performance and advanced graphics with 16 colors designed for Intel 386 processors.
Released on July 27, 1993 This OS Cost $495 USD Windows NT (New Technology) was a 32-bit operating system developed to support preemptive multitasking.
Released on August 24, 1995 This OS Cost $209 USD This was the major upgrade to the Windows OS. It supported 32-bit applications, which written specifically for this OS.
Released on June 25, 1998 This OS Cost $209 USD This Version comes with new technologies, including FAT32, AGP, MMX, USB, DVD, and ACPI. Its most visible features.
Released on February 17, 2000 This OS Cost $319 USD This was an OS for desktop and laptop to run software applications, connect to Internet and access files, printers.