Windows 98 (codenamed Memphis) is a graphical operating system released on June 25, 1998 by Microsoft and the successor to Windows 95. Like its predecessor, it is a hybrid 16-bit/32-bit monolithic product based on MS-DOS.
The first edition of Windows 98 is designated by the internal version number 4.10.1998, or 4.10.1998A if it has been updated with the Security CD from Microsoft. Windows 98 Second Edition is designated by the internal version number 4.10.2222A, or 4.10.2222B if it has been updated with the Security CD from Microsoft. Windows 98 was succeeded by Windows Me on September 14, 2000.
Windows 98 Second Edition (often shortened to SE) is an updated version of Windows 98, released on May 5, 1999. It includes fixes for many minor issues, improved USB support, and the replacement of Internet Explorer 4.0 with the significantly faster and lighter Internet Explorer 5.0. Also included is Internet Connection Sharing, which allows multiple computers on a LAN to share a single Internet connection through Network Address Translation. Other features in the update include Microsoft NetMeeting 3.0 and integrated support for DVD-ROM drives. A memory overflow issue was resolved which in the older version of Windows 98 would crash most systems if left running for 48 hours. Also included on the CD-ROM is the option to install Microsoft Plus! themes for Windows 98. A list of all features new to Windows 98 Second Edition can be found here
