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Stofor
Stofor, pronounced as in "Stow Four", is a store and forward message switching system designed by Fenwood Designs Ltd, UK in 1980. Market and specification Stofor was aimed squarely at the bottom end of the market and its competitors were from companies such as Chernikeeff (now John Lilley and Gillie Ltd) and Racal but Stofor was soon outselling both with ease. The Stofor range was based on a 4 MHz Zilog Z80 processor with 64K RAM and provided from 4 to 64 ports. Early models, and some later ones, were floppy disk based but later and larger versions had 10Mb Winchester technology hard disks for storage. Stofor was the only message switching system of its size to boast a custom text editor designed by Fenwood with the needs of the telex user in mind. Its main workload was in the sending and receiving of telex messages but it was also put to work in a wide range of other communications areas including fax. The initial design was for a system that would replace a London c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Store-and-forward Switching Center
Store and forward is a telecommunications technique in which information is sent to an intermediate station where it is kept and sent at a later time to the final destination or to another intermediate station. The intermediate station, or node in a networking context, verifies the integrity of the message before forwarding it. In general, this technique is used in networks with intermittent connectivity, especially in the wilderness or environments requiring high mobility. It may also be preferable in situations when there are long delays in transmission and variable and high error rates, or if a direct, end-to-end connection is not available. Modern store and forward networking * Store and forward originates with delay-tolerant networks. No real-time services are available for these kinds of networks. * Logistical Networking is a scalable form of store and forward networking that exposes network-embedded buffers on intermediate nodes and allows flexible creation of services ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Store And Forward
Store and forward is a telecommunications technique in which information is sent to an intermediate station where it is kept and sent at a later time to the final destination or to another intermediate station. The intermediate station, or node in a networking context, verifies the integrity of the message before forwarding it. In general, this technique is used in networks with intermittent connectivity, especially in the wilderness or environments requiring high mobility. It may also be preferable in situations when there are long delays in transmission and variable and high error rates, or if a direct, end-to-end connection is not available. Modern store and forward networking * Store and forward originates with delay-tolerant networks. No real-time services are available for these kinds of networks. * Logistical Networking is a scalable form of store and forward networking that exposes network-embedded buffers on intermediate nodes and allows flexible creation of services ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Store And Forward Delay
In a network based on packet switching, transmission delay (or store-and-forward delay, also known as packetization delay) is the amount of time required to push all the packet's bits into the wire. In other words, this is the delay caused by the data-rate of the link. Transmission delay is a function of the packet's length and has nothing to do with the distance between the two nodes. This delay is proportional to the packet's length in bits, It is given by the following formula: :D_T = N/R seconds where :D_T is the transmission delay in seconds :''N'' is the number of bits, and :''R'' is the rate of transmission (say in bits per second) Most packet switched networks use store-and-forward transmission at the input of the link. A switch using store-and-forward transmission will receive (save) the entire packet to the buffer and check it for CRC errors or other problems before sending the first bit of the packet into the outbound link. Thus, store-and-forward packet switches int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Network Switch
A network switch (also called switching hub, bridging hub, and, by the IEEE, MAC bridge) is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device. A network switch is a multiport network bridge that uses MAC addresses to forward data at the data link layer (layer 2) of the OSI model. Some switches can also forward data at the network layer (layer 3) by additionally incorporating routing functionality. Such switches are commonly known as layer-3 switches or multilayer switches. Switches for Ethernet are the most common form of network switch. The first MAC Bridge was invented in 1983 by Mark Kempf, an engineer in the Networking Advanced Development group of Digital Equipment Corporation. The first 2 port Bridge product (LANBridge 100) was introduced by that company shortly after. The company subsequently produced multi-port switches for both Ethernet and FDDI such as GigaSwitch. Digital ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aldershot
Aldershot () is a town in Hampshire, England. It lies on heathland in the extreme northeast corner of the county, southwest of London. The area is administered by Rushmoor Borough Council. The town has a population of 37,131, while the Aldershot Urban Area, a loose conurbation (which also includes other towns such as Camberley, Farnborough, and Farnham) has a population of 243,344, making it the thirtieth-largest urban area in the UK. Aldershot is known as the "Home of the British Army", a connection which led to its rapid growth from a small village to a Victorian town. History Early history The name may have derived from alder trees found in the area (from the Old English 'alder-holt' meaning copse of alder trees). Any settlement, though not mentioned by name, would have been included as part of the Hundred of Crondall referred to in the Domesday Book of 1086. The Church of St Michael the Archangel is the parish church for the town and dates to the 12th century with la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guildford
Guildford () is a town in west Surrey, around southwest of central London. As of the 2011 census, the town has a population of about 77,000 and is the seat of the wider Borough of Guildford, which had around inhabitants in . The name "Guildford" is thought to derive from a crossing of the River Wey, a tributary of the River Thames that flows through the town centre. The earliest evidence of human activity in the area is from the Mesolithic and Guildford is mentioned in the will of Alfred the Great from . The exact location of the main Anglo-Saxon settlement is unclear and the current site of the modern town centre may not have been occupied until the early 11th century. Following the Norman Conquest, a motte-and-bailey castle was constructed, which was developed into a royal residence by Henry III. During the late Middle Ages, Guildford prospered as a result of the wool trade and the town was granted a charter of incorporation by Henry VII in 1488. The River Wey Navig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Godalming
Godalming is a market town and civil parish in southwest Surrey, England, around southwest of central London. It is in the Borough of Waverley, at the confluence of the Rivers Wey and Ock. The civil parish covers and includes the settlements of Farncombe, Binscombe and Holloway Hill. Much of the area lies on the strata of the Lower Greensand Group and Bargate stone was quarried locally until the Second World War. The earliest evidence of human activity is from the Paleolithic and the River Wey floodplain at Charterhouse was settled in the middle Iron Age and Roman period. The modern town is thought to have its origins in the 6th or early 7th centuries and its name is thought to derive from that of a Saxon landowner. Kersey, a woollen cloth, dyed blue, was produced at Godalming for much of the Middle Ages, but the industry declined in the early modern period. In the 17th century, the town began to specialise in the production of knitted textiles and in the manufactur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Farncombe
Farncombe, historically Fernecome, is a village and peripheral settlement of Godalming in Waverley, Surrey, England and is approximately 0.8 miles (1.3 km) north-east of the Godalming centre, separated by common land known as the ''Lammas Lands''. The village of Compton lies to the northwest and Bramley to the east; whilst Charterhouse School is to the west. Loseley Park, in the hamlet of Littleton, lies to the north of the village. History Farncombe is an ancient site of settlement; archaeological finds from the Bronze Age have been found in Northbourne Estate. In more modern history Farncombe appeared in the Domesday Book of 1086 as ''Fernecome''. It was held by the Bishop of Bayeux. Its Domesday assets were: 2 ploughs, of meadow, woodland worth 3 hogs. It rendered £1 4s 0d. Few older buildings survive as evidence of its long history; among the oldest is a row of almshouses, built in 1622. One of the older buildings in Farncombe is Farncombe Infants' School, on Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lockheed Corporation
The Lockheed Corporation was an American aerospace manufacturer. Lockheed was founded in 1926 and later merged with Martin Marietta to form Lockheed Martin in 1995. Its founder, Allan Lockheed, had earlier founded the similarly named but otherwise-unrelated Loughead Aircraft Manufacturing Company, which was operational from 1912 to 1920. History Origins Allan Loughead and his brother Malcolm Loughead had operated an earlier aircraft company, Loughead Aircraft Manufacturing Company, which was operational from 1912 to 1920. The company built and operated aircraft for paying passengers on sightseeing tours in California and had developed a prototype for the civil market, but folded in 1920 due to the flood of surplus aircraft deflating the market after World War I. Allan went into the real estate market while Malcolm had meanwhile formed a successful company marketing brake systems for automobiles. On December 13, 1926, Allan Lockheed, Jack Northrop, John Northrop, Kenneth K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Equipment Corporation
Digital Equipment Corporation (DEC ), using the trademark Digital, was a major American company in the computer industry from the 1960s to the 1990s. The company was co-founded by Ken Olsen and Harlan Anderson in 1957. Olsen was president until forced to resign in 1992, after the company had gone into precipitous decline. The company produced many different product lines over its history. It is best known for the work in the minicomputer market starting in the mid-1960s. The company produced a series of machines known as the PDP line, with the PDP-8 and PDP-11 being among the most successful minis in history. Their success was only surpassed by another DEC product, the late-1970s VAX "supermini" systems that were designed to replace the PDP-11. Although a number of competitors had successfully competed with Digital through the 1970s, the VAX cemented the company's place as a leading vendor in the computer space. As microcomputers improved in the late 1980s, especially wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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