It was part of the first series of computers manufactured in the late 1960s under Plan Calcul.
The 10070 is a rebadged Scientific Data Systems (SDS) Sigma 7.
In addition to the Sigma software, a new operating system was developed by teams from INRIA.
It also has mémoire topographique as a standard feature, similar to virtual memory except that it is only intended for instant memory-to-memory remapping for performance reasons, with no support for managing swapping to disk.
The CII 10070 runs several SDS and locally developed operating systems: Most of the software for the 10070 also came from SDS: This mainframe computer-related article is a stub.