== Manuals ==
* [[Media:Schneider NLQ401 User Manual(German)...pdf|NLQ401 User Manual (German)]]
* [[Media:Schneider NLQ401 Service Manual (German).pdf|NLQ401 Service Manual (German)]]
* [[Media:UPD7811G Datasheet.pdf|uPD7811G Datasheet]] (8bit CPU with 4096 byte ROM, 256 byte RAM, 44 I/O lines)