This is an universal programmer for different targets, that can be attached to the parallel port of a PC.
It has a standard 50 pin connector that can be used to attach another PCB that connects the inputs and outputs to several other connectors, e.g.:
The schematics are available in the software tarball pppcb-0.10.0.tar.gz
The schematics are available in Cadsofts Eagle format and as PostScript.