Has subject, author, and publisher indexes. Indexes critical information about current publications in the computing sciences. This is one of the best places to get started on almost any search. Coverage for Physics Abstracts , in paper, is from 1917 to 1995. This is one of the indexes you should check first if what you are searching for something that pertains to computers.
Emphasis is on theoretical aspects.
Has author and subject indexes. There are a number of computer dictionaries on the Internet. Rather than list them one by one, I suggest going to Yahoo which maintains a list of some of them. An excellent dictionary containing brief definitions of technical and scientific terms. Has good illustrations.