Accent kernelAccent is an operating systemkernel, most notable for being the predecessor to the Mach kernel. Originally developed at Carnegie Mellon University (CMU), Accent was influenced by the Aleph kernel developed at the University of Rochester. Accent improves upon Aleph, fixing several problems and re-targeting hardware support for networks of workstation machines (specifically, the Three RiversPERQ) instead of minicomputers.
Operating systemSoftware that manages computer hardware resourcesAn operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, peripherals, and other resources.Mach (kernel)Mach () is an operating system kernel developed at Carnegie Mellon University by Richard Rashid and Avie Tevanian to support operating system research, primarily distributed and parallel computing. Mach is often considered one of the earliest examples of a microkernel. Nonetheless, not all versions of Mach are microkernels. Mach's derivatives are the basis of the operating system kernel in GNU Hurd and of Apple's XNU kernel used in macOS, iOS, iPadOS, tvOS, and watchOS.Inter-process communicationIn computer science, interprocess communication (IPC) is the sharing of data between running processes in a computer system, or between multiple such systems. Mechanisms for IPC may be provided by an operating system. Applications which use IPC are often categorized as clients and servers, where the client requests data and the server responds to client requests. Many applications are both clients and servers, as commonly seen in distributed computing.
Data General EclipseThe Data General Eclipse line of computers by Data General were 16-bitminicomputers released in early 1974 and sold until 1988. The Eclipse was based on many of the same concepts as the Data General Nova, but included support for virtual memory and multitasking more suitable to the small office than the lab. It was also packaged differently for this reason, in a floor-standing case the size of a small refrigerator.
Carnegie Mellon UniversityUniversity in Pittsburgh, Pennsylvania, USCarnegie Mellon University (CMU) is a privateresearch university in Pittsburgh, Pennsylvania, United States. The institution was established in 1900 by Andrew Carnegie as the Carnegie Technical Schools. In 1912, it became the Carnegie Institute of Technology and began granting four-year degrees.
EthernetEthernet ( ) is a family of wired computer networking standards designed for (but not limited to) local area networks (LAN), access networks, and metropolitan area networks (MAN). It was commercially introduced in 1980 and first standardized in 1983 as ECMA-82 and shortly after as IEEE 802.3. It is an example of an open standard.University of RochesterThe University of Rochester is a private research university in Rochester, New York, United States. It was founded in 1850 and moved into its current campus, next to the Genesee River, in 1930. With approximately 30,000 full-time employees, the university is the largest private employer in Upstate New York and the seventh-largest in all of New York State.
MinicomputerA minicomputer, or colloquially mini, is a type of general-purpose computer mostly developed from the mid-1960s, built significantly smaller and sold at a much lower price than mainframe computers. Minicomputers are small relative to earlier and bigger machines. The class formed a distinct group with its own software architectures and operating systems.
XeroxAmerican document management corporationXerox Holdings Corporation (, ) is an American corporation that sells printers, digital document products, and services in more than 160 countries. Xerox was the pioneer of the photocopier market, beginning with the introduction of the Xerox 914 in 1959, so much so that the word xerox is commonly used as a synonym for photocopy.
MicrokernelIn computer science, a microkernel (often abbreviated as μ-kernel) is the near-minimum amount of software that can provide the mechanisms needed to implement an operating system (OS). These mechanisms include low-level address space management, thread management, and inter-process communication (IPC).
GNU HurdGNU Hurd is a collection of microkernel servers written as part of GNU, for the GNU Mach microkernel. It has been under development since 1990 by the GNU Project of the Free Software Foundation, designed as a replacement for the Unix kernel, and released as free software under the GNU General Public License. When the Linux kernel proved to be a viable solution, development of GNU Hurd slowed, at times alternating between stasis and renewed activity and interest.*As an Amazon Associate I earn from qualifying purchases.