Difference between revisions of "Technology Square"

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Originally, the 9th floor held MIT's second [[Compatible Time-Sharing System|CTSS]] machine, and the [[GE-635]] and [[GE-645]] of the [[Multics]] project.
 
Originally, the 9th floor held MIT's second [[Compatible Time-Sharing System|CTSS]] machine, and the [[GE-635]] and [[GE-645]] of the [[Multics]] project.
  
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Later on, space around the outer walls where the CTSS/Multics machines used to be was turned into enclosed offices; the remainder of that space was uses to hold the MIT-MC [[KL10]] [[Incompatible Timesharing System|ITS]] machine.
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Later on, space around the outer walls where the CTSS/Multics machines used to be was turned into enclosed offices; the remainder of that space was used to hold the MIT-MC [[KL10]] [[Incompatible Timesharing System|ITS]] machine.
  
 
(A ping-pong table was behind MC, between it and the outer wall at the end of the building; this was later dispensed with, so the space could be used to hold the CSR group's [[PDP-11/40]]. Later the /40's CPU was swapped to EECS - they wanted it for a second [[front end]] on the EECS [[DECSYSTEM-20]], which was named 'DeepThought' - for a [[PDP-11/45]], which had been the EECS DELPHI machine, on which quite a few years of CS undergrads learned to program. ''Sic transit gloria mundi.'')
 
(A ping-pong table was behind MC, between it and the outer wall at the end of the building; this was later dispensed with, so the space could be used to hold the CSR group's [[PDP-11/40]]. Later the /40's CPU was swapped to EECS - they wanted it for a second [[front end]] on the EECS [[DECSYSTEM-20]], which was named 'DeepThought' - for a [[PDP-11/45]], which had been the EECS DELPHI machine, on which quite a few years of CS undergrads learned to program. ''Sic transit gloria mundi.'')

Revision as of 10:57, 10 March 2023

Technology Square (usually shortened to Tech Sq) was the nickname for MIT building NE43 which housed Project MAC, which later split into the AI Lab and the Laboratory for Computer Science (including the Dynamic Modeling, Mathlab, and Macsyma Consortium groups). The machine room was on the top (9th) floor.

9th floor layout

Floor plan

Originally, the 9th floor held MIT's second CTSS machine, and the GE-635 and GE-645 of the Multics project.

Later on, space around the outer walls where the CTSS/Multics machines used to be was turned into enclosed offices; the remainder of that space was used to hold the MIT-MC KL10 ITS machine.

(A ping-pong table was behind MC, between it and the outer wall at the end of the building; this was later dispensed with, so the space could be used to hold the CSR group's PDP-11/40. Later the /40's CPU was swapped to EECS - they wanted it for a second front end on the EECS DECSYSTEM-20, which was named 'DeepThought' - for a PDP-11/45, which had been the EECS DELPHI machine, on which quite a few years of CS undergrads learned to program. Sic transit gloria mundi.)

The ARPANET IMPs were along the outer sidewall where it says '1401'. The MIT-XX DECSYSTEM-20 TOPS-20 machine was installed where it says '1401', along the outer side wall.

Technology Square and NE43 in 1994

The MIT-DM KA10 ITS machine was between the DM PDP-6 and the MIT-ML KA10 ITS machine (which was mostly along the outer wall, with its DEC disk drives in front of it), and also along the outer wall behind that PDP-6.

The Dover was eventually installed between the two doors into the lobby, on that side of the building.

As the other end, the offices 919-922 were done away with, and that all became open raised floor, initally holding various robot arms, the Xerox Graphics Printer, etc, etc; later CADR LISP machines were there (and elsewhere). The AI ITS KA10 was later replaced with the MIT-OZ TOPS-20 DECSYSTEM-20.

External links

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