Title
4688 System Building BlockCatalog Number
102656101Type
Physical objectDescription
Unlike other 4688 modules this one has no serial number stamped in the frame. Large letters "X" hand-written in marker on both sides. One land pattern cirdled in marker. Paper tag attached by string reads "IN HOUSE BOARD" and "Lifted copper".Date
1965 ca.Manufacturer
Digital Equipment Corporation (DEC)Identifying Numbers
Model number | 4688D |