It was part of Kodak's DCS (Digital Camera System) line.
Kodak also used the imaging component and electronics of the DCS 420 to produce a digital version of the Nikonos underwater camera, which was produced in limited numbers for military and scientific applications as the Kodak DCS 425.
The non-colour versions are very rare and tend to collect high prices at auctions and second-hand brokers.
The DCS 400-series were based on the Nikon N90s 35 mm film camera (called F90x in Europe).
After the Nikon N90s/F90x was introduced in late 1994, Kodak started using that model as basis for the DCS 400-series.