1973 Timeline

|  | Information Research Services | Updated: 20 August 1997

|  |  |  |  |  |  |  | May: RSX-11D, a real-time operating system for online data acquisition, monitoring and control on the PDP-11, is introduced.
|  |  |  |  |  |  |  | July: RT-11, a real-time operating system for monitoring and control, is introduced.
|  |  |  |  |  |  |  | September: DIGITAL develops DEC Data Communications Message Protocol (DDCMP) as a standard for its future computer-to-computer communications.