Relay (disambiguation) — Relay may refer to: *a station in a message forwarding system, especially for the changing of horses by couriers **Relay league **cursus publicus (Roman Empire) * Relay, an electronics component * Microwave radio relay * Relay race *… … Wikipedia
Relay — This article is about the electrical component. For other uses, see Relay (disambiguation). Automotive style miniature relay, dust cover is taken off A relay is an electrically operated switch. Many relays use an electromagnet to operate a… … Wikipedia
postal system — System that allows persons to send letters, parcels, or packages to addressees in the same country or abroad. Postal systems are usually government run and paid for by a combination of user charges and government subsidies. There are early… … Universalium
Application Layer — The Application Layer is the seventh level of the seven layer OSI model, and the top layer of the TCP/IP model. It interfaces directly to and performs common application services for the application processes; it also issues requests to the… … Wikipedia
Application layer — The Internet protocol suite (TCP/IP) and the Open Systems Interconnection model (OSI model) of computer networking each specify a group of protocols and methods identified by the name application layer. In TCP/IP, the application layer contains… … Wikipedia
Protective relay — See also: Power system protection In electrical engineering, a protective relay is a complex electromechanical apparatus, often with more than one coil, designed to calculate operating conditions on an electrical circuit and trip circuit breakers … Wikipedia
Internet Relay Chat — IRC redirects here. For other uses, see IRC (disambiguation). For IRC channels dedicated to Wikipedia, see Wikipedia:IRC Internet Relay Chat (IRC) is a protocol for real time Internet text messaging (chat) or synchronous conferencing.[1] It is… … Wikipedia
nervous system, human — ▪ anatomy Introduction system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… … Universalium
Comparison of Internet Relay Chat clients — This article is about Internet Relay Chat clients. For a comparison of instant messaging clients, see Comparison of instant messaging clients. For a comparison of mobile Internet Relay Chat clients, see Comparison of mobile Internet Relay Chat… … Wikipedia
Digital protective relay — In electrical engineering of power systems, a digital protective relay uses a microcontroller with software based protection algorithms for the detection of electrical faults. Such relays are also termed as microprocessor type protective relays.… … Wikipedia
Operating system — Operating systems … Wikipedia