system was a small computer, programmed similarly to industrial control computers with a fixed number of tasks running all the time. The controller was also tasked with translating the data to and from the host format. IBM offered the 1367 Data Controller for Control Data systems, realizing that most users with this sort of storage need had a number of CDC machines. Other Controllers were available for different host platforms. Notes References Citations Bibliography J. D. Kuehler and H. Ray Kerby, "A photo-digital mass storage system", Proceedings of the November 7–10, 1966, fall joint computer conference, American Federation of Information Processing Societies, 1966, pp. 735–742 Gilbert King, "Data Processing with the Photostore," Chap. 19 of "Large Capacity Memory Techniques for Computing Systems," Macmillan, New York, 1962, pp. 301–304 Robert Potter, "Component Evaluation for an Optical Data Processor," Optical Processing of Information, Spartan Books, 1963, pp. 168–186. Describes the IBM Photostore in the AN/GSQ-16. External links IBM1360 Photo-Digital Storage System Principles of Operation Photostore at computerhistory.org Photostore by John Fletcher (contains pictures and schematics) 1360