The CDC 6400 was upgraded to a CDC 6500 in 1969. This image, taken on 12 February 1974, shows a general view of the remote input/output station installed in building 112, used for submitting jobs to the CDC 6500 and 6600. The card reader on the left and the line printer on the right are operated by programmers on a self-service basis.
The 6400 is ugraded to a 6500
Computing at CERN