Editing PLATO (computer system) (section)

=== Cyber1 ===
In August 2004, a version of PLATO<ref name="cyber1">{{Citation | url = http://www.cyber1.org/ | title = Cyber1}}.</ref> corresponding to the final release from CDC was resurrected online. This version of PLATO runs on a [[free and open-source software]] [[emulator|emulation]] of the original CDC hardware called Desktop Cyber. Within six months, by word of mouth alone, more than 500 former users had signed up to use the system. Many of the students who used PLATO in the 1970s and 1980s felt a special social bond with the community of users who came together using the powerful communications tools (talk programs, records systems and notesfiles) on PLATO.{{Citation needed|date=August 2011}}

The PLATO software used on Cyber1 is the final release (99A) of CYBIS, by permission of VCampus. The underlying operating system is NOS 2.8.7, the final release of the [[NOS (operating system)|NOS]] [[operating system]], by permission of Syntegra (now British Telecom [BT]), which had acquired the remainder of CDC's mainframe business. Cyber1 runs this software on the Desktop Cyber emulator. Desktop Cyber accurately emulates in software a range of CDC Cyber mainframe models and many peripherals.<ref>{{cite web|last1=Hunter|first1=Tom|title=Desktop CYBER Emulator|url=http://members.iinet.net.au/~tom-hunter/index.html|website=iiNet|publisher=Tom Hunter|access-date=30 October 2015}}</ref>

Cyber1 offers free access to the system, which contains over 16,000 of the original lessons, in an attempt to preserve the original PLATO communities that grew up at CERL and on CDC systems in the 1980s.{{Citation needed | date =August 2011}} The load average of this resurrected system is about 10–15 users, sending personal and notesfile notes, and playing inter-terminal games such as ''Avatar'' and ''Empire'' (a ''Star Trek''-like game), which had both accumulated more than 1.0 million contact hours on the original PLATO system at UIUC.<ref name="cyber1" />