Home Tech Brief Semantic Markup and Accessibility References The Importance of a Router A router is used to connect to the Internet. It’s a networking device that uses packets of data to communicate with computers. Routers are usually found in homes and offices for internet use. The first router was created in the late 1960s and the first known router was called Interface Message Processor (IMP). In the Tech Brief you will find some background information on Routers, as well as, a SWOT analysis. Also, the Semantic Markup and Accessibility link explains how semantic markup is used was it pertains to websites. Lastly, there are details on seperating styles from content and descriptions of CSS.