Microsoft's Windows 1.0 celebrates its silver jubilee.

Bill Gates, founder of Microsoft had announced Windows v 1.0 on Nov 20th, 1985 at Plaza Hotel in New York in style. Yesterday it celebrated  its 25th birthday.

Windows 1.0 was a 16-bit GUI OS. Windows 1.0 featured:

• Limited multitasking of existed MS-DOS programs
• Windows 1.0 runs a shell program known as MS-DOS Executive.
• It included graphical Calculator, Calendar, Cardfile, Clipboard viewer, Clock, Control Panel, Notepad, Paint, Terminal, and Write.
• All windows were tiled. Only dialog boxes can appear over other windows.
• ........

System requirements for Windows 1.01:

• CGA/Hercules/EGA (listed as "Monochrome or color monitor")
• MS-DOS 2.0
• 256 kB of memory or greater
• Two double-sided disk drives or a hard drive

Much of the info, credits goes to Wikipedia

Microsoft's Windows 1.0 celebrates its silver jubilee.