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Plan 9 From Bell Labs
Plan 9 from Bell Labs is a distributed operating system which originated from the Computing Science Research Center (CSRC) at Bell Labs in the mid-1980s and built on UNIX concepts first developed there in the late 1960s. Since 2000, Plan 9 has been free and open-source. The final official release was in early 2015. Under Plan 9, UNIX's '' everything is a file'' metaphor is extended via a pervasive network-centric filesystem, and the cursor-addressed, terminal-based I/O at the heart of UNIX-like operating systems is replaced by a windowing system and graphical user interface without cursor addressing, although rc, the Plan 9 shell, is text-based. The name ''Plan 9 from Bell Labs'' is a reference to the Ed Wood 1957 cult science fiction Z-movie '' Plan 9 from Outer Space''. The system continues to be used and developed by operating system researchers and hobbyists. History Plan 9 from Bell Labs was originally developed, starting in the late 1980s, by members of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Renée French
Renée French (born 1963) is an American comics writer and illustrator and, under the pen name Rainy Dohaney, a children's literature, children's book author, and exhibiting artist. Her work is characterized by her "obsessive-looking and highly unsettling visual style." Books Her work includes ''H Day'' (Picturebox), ''The Soap Lady'' (inspired by the display in the Mütter Museum) (Top Shelf Productions), ''The Ticking'' (Top Shelf Productions), and ''Micrographica'' (Top Shelf Productions), ''Edison Steelhead's Lost Portfolio: Exploratory Studies of Girls and Rabbits'' (Sparkplug Books), and ''Marbles in My Underpants'' (Oni Press). She also has a weekly strip ''The Taint'' in the ''New York Press''. Her serialized comic ''Baby Bjornstrand'' appears on the Study Group Comic Books website. ''The New York Times'' said her graphic novels "split the difference between adorable and horrifically gross"; writing about "Baby Bjornstrand", they called it "equal parts Daffy Duck and S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MIT License
The MIT License is a permissive software license originating at the Massachusetts Institute of Technology (MIT) in the late 1980s. As a permissive license, it puts very few restrictions on reuse and therefore has high license compatibility. Unlike copyleft software licenses, the MIT License also permits reuse within proprietary software, provided that all copies of the software or its substantial portions include a copy of the terms of the MIT License and also a copyright notice. In 2015, the MIT License was the most popular software license on GitHub, and was still the most popular in 2025. Notable projects that use the MIT License include the X Window System, Ruby on Rails, Node.js, Lua (programming language), Lua, jQuery, .NET, Angular (web framework), Angular, and React (JavaScript library), React. License terms The MIT License has the identifier MIT in the SPDX License List. It is also known as the "#Ambiguity and variants, Expat License". It has the following terms: Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Terminal
A computer terminal is an electronic or electromechanical hardware device that can be used for entering data into, and transcribing data from, a computer or a computing system. Most early computers only had a front panel to input or display bits and had to be connected to a terminal to print or input text through a keyboard. Teleprinters were used as early-day hard-copy terminals and predated the use of a computer screen by decades. The computer would typically transmit a line of data which would be printed on paper, and accept a line of data from a keyboard over a serial or other interface. Starting in the mid-1970s with microcomputers such as the Sphere 1, Sol-20, and Apple I, display circuitry and keyboards began to be integrated into personal and workstation computer systems, with the computer handling character generation and outputting to a CRT display such as a computer monitor or, sometimes, a consumer TV, but most larger computers continued to require terminal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Addressable Cursor
In computing, an addressable cursor is a cursor which can, through use of either software or firmware In computing Computing is any goal-oriented activity requiring, benefiting from, or creating computer, computing machinery. It includes the study and experimentation of algorithmic processes, and the development of both computer hardware, h ..., be moved (at least theoretically) to any given point on the computer screen. References Graphical user interface elements {{comp-sci-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Everything Is A File
"Everything is a file" is an approach to interface design in Unix derivatives. While this turn of phrase does not as such figure as a Unix design principle or philosophy, it is a common way to analyse designs, and informs the design of new interfaces in a way that prefers, in rough order of import: # representing objects as file descriptors in favour of alternatives like abstract handles or names, # operating on the objects with standard input/output operations returning byte streams to be interpreted by applications (rather than explicitly structured data), and # allowing the usage or creation of objects by opening or creating files in the global filesystem name space. The lines between the common interpretations of "file" and "file descriptor" are often blurred when analysing Unix, and nameability of ''files'' is the least important part of this principle; thus, it is sometimes described as "Everything is a file descriptor". This approach is interpreted differently with time ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free And Open-source Software
Free and open-source software (FOSS) is software available under a license that grants users the right to use, modify, and distribute the software modified or not to everyone free of charge. FOSS is an inclusive umbrella term encompassing free software and open-source software. The rights guaranteed by FOSS originate from the "Four Essential Freedoms" of '' The Free Software Definition'' and the criteria of '' The Open Source Definition''. All FOSS can have publicly available source code, but not all source-available software is FOSS. FOSS is the opposite of proprietary software, which is licensed restrictively or has undisclosed source code. The historical precursor to FOSS was the hobbyist and academic public domain software ecosystem of the 1960s to 1980s. Free and open-source operating systems such as Linux distributions and descendants of BSD are widely used, powering millions of servers, desktops, smartphones, and other devices. Free-software licenses and open-so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UNIX
Unix (, ; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. Initially intended for use inside the Bell System, AT&T licensed Unix to outside parties in the late 1970s, leading to a variety of both academic and commercial Unix variants from vendors including University of California, Berkeley ( BSD), Microsoft (Xenix), Sun Microsystems ( SunOS/ Solaris), HP/ HPE ( HP-UX), and IBM ( AIX). The early versions of Unix—which are retrospectively referred to as " Research Unix"—ran on computers such as the PDP-11 and VAX; Unix was commonly used on minicomputers and mainframes from the 1970s onwards. It distinguished itself from its predecessors as the first portable operating system: almost the entire operating system is written in the C programming language (in 1973), which allows U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distributed Operating System
A distributed operating system is system software over a collection of independent software, networked, communicating, and physically separate computational nodes. They handle jobs which are serviced by multiple CPUs. Each individual node holds a specific software subset of the global aggregate operating system. Each subset is a composite of two distinct service provisioners. The first is a ubiquitous minimal kernel, or microkernel, that directly controls that node's hardware. Second is a higher-level collection of ''system management components'' that coordinate the node's individual and collaborative activities. These components abstract microkernel functions and support user applications. The microkernel and the management components collection work together. They support the system's goal of integrating multiple resources and processing functionality into an efficient and stable system. This seamless integration of individual nodes into a global system is referred to as ''tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derivatives And Forks
The derivative of a function is the rate of change of the function's output relative to its input value. Derivative may also refer to: In mathematics and economics *Brzozowski derivative in the theory of formal languages *Covariant derivative, a way of specifying a derivative along tangent vectors of a manifold with a connection. *Exterior derivative, an extension of the concept of the differential of a function to differential forms of higher degree. *Formal derivative, an operation on elements of a polynomial ring which mimics the form of the derivative from calculus * Fréchet derivative, a derivative defined on normed spaces. *Gateaux derivative, a generalization of the concept of directional derivative in differential calculus. * Lie derivative, the change of a tensor field (including scalar functions, vector fields and one-forms), along the flow defined by another vector field. * Radon–Nikodym derivative in measure theory * Derivative (set theory), a concept applicable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inferno (operating System)
Inferno is a distributed operating system started at Bell Labs and now developed and maintained by Vita Nuova Holdings as free software under the MIT License. Inferno was based on the experience gained with Plan 9 from Bell Labs, and the further research of Bell Labs into operating systems, languages, on-the-fly compilers, graphics, security, networking and portability. The name of the operating system, many of its associated programs, and that of the current company, were inspired by Dante Alighieri's ''Divine Comedy''. In Italian, ''Inferno'' means " hell", of which there are nine circles in Dante's ''Divine Comedy''. Design principles Inferno was created in 1995 by members of Bell Labs' Computer Science Research division to bring ideas derived from their previous operating system, Plan 9 from Bell Labs, to a wider range of devices and networks. Inferno is a distributed operating system based on three basic principles: * Resources as files: all resources are represented ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge Distributed Computing System
The Cambridge Distributed Computing System is an early discontinued distributed operating system, developed in the 1980s at Cambridge University. It grew out of the Cambridge Ring local area network, which it used to interconnect computers. The Cambridge system connected terminals to "processor banks". At login, a user would request from the bank a machine with a given architecture and amount of memory. The system then assigned to the user a machine that served, for the duration of the login session, as their " personal" computer. The machines in the processor bank ran the TRIPOS TRIPOS (''TRIvial Portable Operating System'') is a computer operating system. Development started in 1976 at the Computer Laboratory of Cambridge University and it was headed by Dr. Martin Richards. The first version appeared in January 1978 a ... operating system. Additional special-purpose servers provided file and other services. At its height, the Cambridge system consisted of some 90 machine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
