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Open Source: 1953 UNIVAC A-2 system Computer emulation: 1964 - IBM OS/360 (IBM 1400 emulator) NoSQL databases: 1966 - MUMPS System (Massachusetts General Hos

Open Source: 1953 UNIVAC A-2 system Computer emulation: 1964 - IBM OS/360 (IBM 1400 emulator) NoSQL databases: 1966 - MUMPS System (Massachusetts General Hospital Utility Multi-Programming System) Virtual memory: 1972 - IBM OS/VS1 CI/CD: 1999 Extreme Programming (XP) CruiseControl

analog31 6y ago
Amusingly, I've always assumed that open design predates even the computer itself. Electronics hobbyists published designs in ham radio magazines, and scientific experiments were published in a way that made them reproducible since antiquity.
gumby 6y ago
Quite a good list but virtual memory predates os/vs1 by a decade at least.
fanf2 6y ago
The first computer with virtual memory was the Manchester University / Ferranti Atlas (1962) https://en.wikipedia.org/wiki/Atlas_%28computer%29 https://en.wikipedia.org/wiki/Atlas_%28computer%29 And of course, before SQL was invented in the 1970s, every database was NoSQL - here's an example from Cambridge https://www.dns.cam.ac.uk/ipreg/old/jackdaw.html https://www.dns.cam.ac.uk/ipreg/old/jackdaw.html
GregarianChild 6y ago
The invention of the concept of virtual memory (as opposed to it's first implementation) is usually attributed to Fritz Rudolf Güntsch’s doctoral dissertation from 1956, see [1, 2] for brief discussions. (There are other, probably better, references, but they seems to be behind paywalls.) I imagine that as natural a concept as virtual memory was independently invented multiple times. For example Denning's 1970 text [3] does not cite Güntsch’s work. [1] L. Robertson, Anecdotes. https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=1369143 https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=1369143 [2] Retrocomputing Stackexchange, Was there a clearly identifiable "first computer" to use or demonstrate the use of virtual memory?. https://retrocomputing.stackexchange.com/questions/12697/was-there-a-clearly-identifiable-first-computer-to-use-or-demonstrate-the-use https://retrocomputing.stackexchange.com/questions/12697/was... [3] P. J. Denning, Virtual Memory. https://courses.cs.washington.edu/courses/cse451/17wi/readings/extra/Denning.pdf https://courses.cs.washington.edu/courses/cse451/17wi/readin...

analog31 6y ago

Amusingly, I've always assumed that open design predates even the computer itself. Electronics hobbyists published designs in ham radio magazines, and scientific experiments were published in a way that made them reproducible since antiquity.

gumby 6y ago

Quite a good list but virtual memory predates os/vs1 by a decade at least.

fanf2 6y ago

The first computer with virtual memory was the Manchester University / Ferranti Atlas (1962) https://en.wikipedia.org/wiki/Atlas_%28computer%29 https://en.wikipedia.org/wiki/Atlas_%28computer%29 And of course, before SQL was invented in the 1970s, every database was NoSQL - here's an example from Cambridge https://www.dns.cam.ac.uk/ipreg/old/jackdaw.html https://www.dns.cam.ac.uk/ipreg/old/jackdaw.html

GregarianChild 6y ago

The invention of the concept of virtual memory (as opposed to it's first implementation) is usually attributed to Fritz Rudolf Güntsch’s doctoral dissertation from 1956, see [1, 2] for brief discussions. (There are other, probably better, references, but they seems to be behind paywalls.) I imagine that as natural a concept as virtual memory was independently invented multiple times. For example Denning's 1970 text [3] does not cite Güntsch’s work. [1] L. Robertson, Anecdotes. https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=1369143 https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=1369143 [2] Retrocomputing Stackexchange, Was there a clearly identifiable "first computer" to use or demonstrate the use of virtual memory?. https://retrocomputing.stackexchange.com/questions/12697/was-there-a-clearly-identifiable-first-computer-to-use-or-demonstrate-the-use https://retrocomputing.stackexchange.com/questions/12697/was... [3] P. J. Denning, Virtual Memory. https://courses.cs.washington.edu/courses/cse451/17wi/readings/extra/Denning.pdf https://courses.cs.washington.edu/courses/cse451/17wi/readin...