Brad Stambaugh writes:

> What is fingerspelling?

Part of American Sign Language (ASL).   ASL typically uses a combination of
sign language and finger spelling (plus expression, etc).   If you want to
say "computer", you use the predefined symbol for computer.   If a
preexisting symbol does not exist, you spell out the word using finger
spelling.   Here's a couple of URL's:

(this last one is one long line...beware of auto-word-wrap)