A pocket computer made by the German company Nixdorf, the LK-3000. Comes with Calculator Card (LK-3900) and Language Card (LK-3080)
Comes with original 6VDC adapter, manuals, and paperwork. Box is a little rough on top only.
The display is a 16 character, 16-segment alphanumeric LED with integral MOS-LSI display controller. The on-board function of this computer is to create a filing system by typing in a name and a code number for the file.