It holds copied Items temporarily before being placed/pasted in a new location or within the same place in a document.
from the Windows clipboard
I take it that you are referring to the "Clipboard Viewer" application, which has been removed from Windows Vista for unknown reasons. You can, however, copy the Clipboard Viewer from a Windows XP computer to your Vista computer: Look for the file C:\windows\system32\clipbrd.exe on your windows XP computer. Copy that to your Vista computer and paste the file wherever you need it. Double-clicking on the icon will enable you to open the Clipboard Viewer.
The Windows 8 clipboard can only hold one piece of information at a time. The Office clipboard however can hold up to 24 items at a time.
clipboard
CLIPBOARD
Ctrl + V
clipboard
CLIPBOARD
It is a memory location called the clipboard. Text is pasted to the clipboard to allow you to paste it to another location.
The system clipboard is a list of files stored in memory that you have chosen to copy or cut. This is only with objects like text or pictures, not files. Certain applications can access the clipboard to show you what is stored on it. In answer to your actual question, you cannot find the clipboard anywhere.
The most common implementation of such a thing is usually called a clipboard.
Office Clipboard