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    Information Research Services Updated: 26 September 1997
         
             
                 
              October 1964:
Digital unveils its first 36-bit computer, the
PDP-6.
                 
              1964:
Tops 10 is developed as the major user software interface for Digital's 36-bit machines.
                 
              November 1965:
In what is believed to be the earliest example of around-the-world networking, a link is made by operating a
PDP-6 in Perth, Australia from Boston via a telex link.
                 
              September 1967:
The
PDP-10 debuts.
                 
              1971:
The
DECsystem-10 is introduced, marking a change in the marketing philosophy of the PDP-10 group.
                 
              1972:
The
KI10 processor is introduced for the DECsystem-10/70.
                 
              1974:
The
KL10 processor is introduced in the DECsystem-10/80 and 10/90.
                 
              January 1976:
Introduction of the 36-bit
DECSYSTEM-20, the lowest-priced general-purpose timesharing system on the market.
                 
              January 1976:
TOPS-20, a new virtual memory operating system, is introduced for use with the DECSYSTEM-20.
                 
              March 1978:
DIGITAL ships the first
DECsystem-2020.