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Reflective Memory
Reflective memory is a means to share common data between different and independent systems deterministically. Such systems using a common reflective memory form a reflective memory network which is a deterministic one, when any system of the network acquired data and writes it to its local memory, such data is written locally to all other systems, this behaviour is like a dual-ported memory system. Reflective memory networks are real-time local area networks where each device or computer always has a local up-to-date copy of the shared data set. These networks are designed for highly deterministic data communications delivering tightly timed performance required on distributed control systems or simulations. Reflective memory technologies are focused to applications where determinism, simplicity for implementation and lack of software overhead are very important considerations. Reflective memory was developed in the 1980s by VMIC for applications in VME systems. Usually reflect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Real-time Local Area Network
Real-time or real time describes various operations in computing or other processes that must guarantee response times within a specified time (deadline), usually a relatively short time. A real-time process is generally one that happens in defined time steps of maximum duration and fast enough to affect the environment in which it occurs, such as inputs to a computing system. Examples of real-time operations include: Computing * Real-time computing, hardware and software systems subject to a specified time constraint * Real-time clock, a computer clock that keeps track of the current time * Real-time Control System, a reference model architecture suitable for software-intensive, real-time computing * Real-time Programming Language, a compiled database programming language which expresses work to be done by a particular time Applications * Real-time computer graphics, sub-field of computer graphics focused on producing and analyzing images in real time ** Real-time camera sys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Large Binocular Telescope
The Large Binocular Telescope (LBT) is an optical telescope for astronomy located on Mount Graham, in the Pinaleno Mountains of southeastern Arizona, United States. It is a part of the Mount Graham International Observatory. When using both 8.4 m (330 inch) wide mirrors, with centres 14.4 m apart, the LBT has the same light-gathering ability as a 11.8 m (464 inch) wide single circular telescope and the resolution of a 22.8 m (897 inch) wide one. The LBT mirrors individually are the joint second- largest optical telescope in continental North America, next to the Hobby–Eberly Telescope in West Texas. It has the largest monolithic, or in an optical telescope. Strehl ratios of 60–90% in the infrared H band and 95% in the infrared M band have been achieved by the LBT. Project The LBT was originally named the "Columbus Project." It is a joint project of these members: the Italian astronomical community represented by the Istituto Nazionale d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethernet
Ethernet () is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 1983 as IEEE 802.3. Ethernet has since been refined to support higher bit rates, a greater number of nodes, and longer link distances, but retains much backward compatibility. Over time, Ethernet has largely replaced competing wired LAN technologies such as Token Ring, FDDI and ARCNET. The original 10BASE5 Ethernet uses coaxial cable as a shared medium, while the newer Ethernet variants use twisted pair and fiber optic links in conjunction with switches. Over the course of its history, Ethernet data transfer rates have been increased from the original to the latest , with rates up to under development. The Ethernet standards include several wiring and signaling variants of the OSI physical layer. Systems communicating over Ethernet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
