... at the University of Washington is a public access database intended to become a repository for all sorts of Electrical Engineering information.

Public wiki archive of electronic circuits for the hobbyist. Contains schematics and PCB layouts.

Public wiki archive of connectors and cables pinouts (pin-out). Contains descriptions on how an electrical cable or connector is wired and the signal information.

Information Tools for Electronics (Software, Web Database) Technical Data Systems offers a CDROM technical database of more than 70,000 electronic component references such as Discrete Semi-conductors, Integrated Circuits, Memories and devices for Optoele ...