What is a url in computer terms?
It is a Uniform Resource Locator, in other words the location of a resource on the internet. For example, http://www.aoqua.com/mystuff/mypage.html is a url. It tells the browser that the file mypage.html can be accessed by using the http protocol from the www.aoqua.com server(s) under the mystuff context. The browser will use DNS to translate “www.aoqua.com” into an IP address, such as 123.456.789.10 and, since it’s going to use http to GET the file it will use port 80 (which is the default port for http requests). Basically the browser sends the request GET /mystuff/mypage.html to the server machine at 123.456.789.10 on port 80. SO you see that the URL specifies the exact location and retrieval method of the desired resource on the internet.