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==Technical details==
==Technical details==
CTSS was a small, elegant timesharing system built for a modified IBM 7094 computer. It is considered one of the first timesharing systems. It was developed by MIT for use in the Computation Center.
The Compatible Timesharing System, released 1961, is a small timesharing system built for the IBM 7094 computer. One of the first timesharing operating systems, it was developed by the Massachusetts Institute of Technology Computation Center. It's worth noting that the “Compatible” in CTSS' name refers to an earlier IBM OS, Fortran Monitor Program, which CTSS virtualized in order to complete batch processes.  


While it had a short lifespan of only twelve years, CTSS proved to be prolific in its own right; it influenced most timesharing systems to come, most notably some IBM timesharing OSes, CP/CMS and [[Multics | Multics}} (the latter being considered a direct descendant). Multics was in fact built on CTSS machines, and was supported by CTSS until it was fully functional.
While it had a short lifespan of twelve years and was only installed in two sites (both on the MIT campus) CTSS proved to be prolific; it influenced most timesharing systems to come, most notably CP/CMS, TSS/360 and [[Multics | Multics]] – the latter a direct descendant, built on and hosted by CTSS machines until it was self-functioning.
The source code of CTSS was made open and freely available in 2004. In August of 2010, an operational 7094 emulator capable of running a functioning CTSS system was released.


CTSS was open sourced in 2004; yet no emulators have been constructed to run it.
==Character details==
CTSS-tan is depicted as having wavy dark red hair, dark red eyes and small oval glasses. A sinophile, she dresses in Chinese-inspired Victorian-style clothing and partakes in Chinese cultural activities. She dresses simply and elegantly, reflecting the sensible nature of the system. Her mother is Whirlwind, and has two sisters who both outlived her: SAGE and PDP 1. She stands out as the only OS-tan in a family of hardware and hybrid -tans.


==Character details==
CTSS is quiet and reserved, traits sometimes mistaken for emotionally-distance or coldness. In reality she is actually quite kind and caring especially toward her “kids” and students. She considered Multics her child and took care of her when she was too young, and sick, to care for herself; one of her greatest achievements in life was raising her into heathy adulthood (and furthermore securing an heir).
CTSS-tan is depicted as having wavy dark red hair, dark eyes, and glasses. She dressed in fashions that were inspired by Chinese designs, with a western twist. Her elegance of clothing is a reference to CTSS' relative simplicity when compared to its successors, especially Multics.
 
==History and background==
Along with Multics, CTSS also taught many young timesharing OS-tans of the day, including [[CPCMS | CP/CMS]], [[TSS360 | TSS/360]] and [[ITS | ITS]]. It is unknown how she feels about her most famous descendant, [[UNIX | Unix]], as the two never had an opportunity to meet; but has been speculated that she would have looked upon her simple granddaughter favourably.
 
While technically an IBM-tan, CTSS had no allegiance to the empire, scorning them for the academic intelligentsia of MIT. The only IBM-tans she regularly worked with, and had affection for, are FMP-tan – her assistant – and CP/CMS, one of her students.
 
CTSS never left Cambridge, Massachusetts and largely ignored the outside world. She had a few outsider friends however, most notably [[DTSS | DTSS-tan]]. While CTSS' short life ended in 1973, her legacy lives on to this day and has no end in sight.  


CTSS-tan's attitude was that of a kindly, caring woman, very mature and selfless. Confronted with her own eminent demise, she made it her life's work to care for the young Multics-tan when she couldn't care for herself; CTSS-tan also acted as her teacher, and the teacher of many young timesharing OS-tans of the day, like CP/CMS-tan, TSS/360-tan and ITS-tan. Through her slow deterioration she kept a serene, live-in-the-moment attitude; while CTSS-tan's life ended in 1973, her legacy lives on to this day and has no end in sight.
==Theories and notes==


[[Category:Historical]]
[[Category:Historical]]
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