For doing search, we can type the search keyboard in address bar of the browser itself.
We need not open separate tab or window for loading the search website such as Google.com and bing.com.
If you enter the search keyword in the browser, the search will be done by default search engine.
For example, if you enter the keyword in address bar of FireFox or Chrome then search will be done by Google. If you enter the keyword in address bar of IE then search will be done by bing.com
Anyway, if you enter domain name in the address bar the homepage the domain will be loaded instead of doing search.
I thought most of the people will be knowing about it. But after reading an article in a blog (mashable.com) I came to know that still most of the people are first loading the search engine webpage for doing any search.
So, I wanted to write this article so that readers can save some time by not loading the search engine webpage for doing search.
Apart from this address bar option we can always use search tool bar if you have installed it.