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dan murphy s teco tenex and tops 20 papers dan murphy s teco tenex and tops 20 papers and assorted memorabilia tenex and tops 20 as published in the ieee annals of the history of computing volume 37 number 1 january march 2015 once again thanks to dave walden this is a condensed version of origins and development of tops 20 below coincidentally this issue includes a lengthy interview with gordon bell the beginnings of teco as published in the ieee annals of the history of computing volume 31 number 4 october december 2009 thanks to dave walden editor of the anecdotes section of the annals for inviting me to jot down this bit of 1960 s history tenex goes on the air june 15 1970 read the tenex newsletter of july 16 1970 which reported the birth of tenex pdp 6 tenex and tops 20 papers ten sys design memos early design memos from 1969 the incipient project was referred to as ten sys later to be changedd to tenex tenex a paged time sharing system for the pdp 10 the first tenex paper originally presented at the 1972 acm symposium on operating system principles storage organization and management in tenex in depth discussion of virtual memory including mapped files in tenex presented at the 1972 fjcc origins and development of tops 20 how tenex was developed into the dec tops 20 operating system for the kl 10 and subsequent machines for the life of the 36 bit systems 1989 a virtual memory distributed file system the tops 20 cluster file system 1985 revised 1989 postscript version two ka 10s at bbn circa 1971 these are the machines between which the first network email was sent by ray tomlinson for other stories about this event enter first email tomlinson into google or your favorite search engine more pictures ka 10 and bbn pager the tops 20 monitor group reportedly 1984 this would be the annual october 31st halloween costume party photo by dick brown passed along by gene leache the tops 20 monitor group 1984 photo by david dyer bennet the layered products group 1984 photo by david dyer bennet more 1984 group pictures a number of pictures were taken with my camera at the time of the same photo shoot as the two pictures by david dyer bennet above in fact ddb himself is seen in a couple of these setting up his shots these scans are from the original negatives and pretty well capture all the resolution they have the rest of the story the dec 20 at columbia university don t forget joe smith s awesome collection of pdp 10 lore