The clipboard is a set of functions and messages that enable applications to transfer data. Because all applications have access to the clipboard, data can be easily transferred between applications or within an application.
Copying text to the clipboard shouldn't be hard. It shouldn't require dozens of steps to configure or hundreds of KBs to load. But most of all, it shouldn't depend on Flash or any bloated framework.
When you copy or cut or move data, it is held temporarily in an invisible portion of memory. This is called as the ClipBoard. The clipboard enables applications to transfer data or between applications or within an application.