Ethernet

Other than the framing types mentioned above, most of the other differences between Ethernet varieties have all been variations on speed and wiring. Therefore, in general, network protocol stack software will work identically on most of the following types. The following sections provide a brief summary of all the official Ethernet media types. In addition to these official standards, many vendors have implemented proprietary media types for various reasons—often to ...

See also:

Ethernet, Ethernet - History, Ethernet - General description, Ethernet - CSMA/CD shared medium Ethernet, Ethernet - Ethernet repeaters and hubs, Ethernet - Bridging and Switching, Ethernet - Dual speed hubs, Ethernet - Ethernet frame types and the EtherType field, Ethernet - Varieties of Ethernet, Ethernet - Some early varieties of Ethernet, Ethernet - 10 Mbit/s Ethernet, Ethernet - Fast Ethernet 100 Mbit/s, Ethernet - Gigabit Ethernet, Ethernet - 10 Gigabit Ethernet, Ethernet - Related standards, Ethernet - Implementations

Read more here: » Ethernet: Encyclopedia II - Ethernet - Varieties of Ethernet

The Alto was first conceptualized in 1972 in an all points memo written by Butler Lampson, and designed primarily by Chuck Thacker. It had 128 (expandable to 512) Kbytes of main memory and a hard disk with a removable 2.5 Mbyte cartridge, all housed in a cabinet about as big as a small refrigerator. The Alto's CPU was a very innovative microcoded processor which used microcode for most of the IO functions rather than hardware. The microcode machine had 16 tasks, one of which executed the normal instruction set (which was rather like a Data G ...

See also:

Xerox Alto, Xerox Alto - Architecture, Xerox Alto - Software, Xerox Alto - Diffusion and evolution, Xerox Alto - Reference

Read more here: » Xerox Alto: Encyclopedia II - Xerox Alto - Architecture

1980 (MCMLXXX) was a leap year starting on Tuesday. It is equivalent to 2733 a.U.c., and to 1359 AH. 1980 - Events. January 1–April 1 - National steel strike in the United Kingdom. January 1 - Changes to the Swedish Act of Succession creates Victoria of Sweden, Crown Princess over her younger brother. January 4 - American president Jimmy Carter proclaims a grain embargo against the USSR with the support of the European Commission. January 5 - Hewlett-Packard ...

Including:

• 1980 - Events
• 1980 - February
• 1980 - March
• 1980 - April
• 1980 - May
• 1980 - June
• 1980 - July
• 1980 - August
• 1980 - September
• 1980 - October
• 1980 - November
• 1980 - December
• 1980 - Unknown dates
• 1980 - Births
• 1980 - January
• 1980 - February
• 1980 - March
• 1980 - April
• 1980 - May
• 1980 - June
• 1980 - July
• 1980 - August
• 1980 - September
• 1980 - October
• 1980 - November
• 1980 - December
• 1980 - Deaths
• 1980 - January
• 1980 - February
• 1980 - March
• 1980 - April
• 1980 - May
• 1980 - June
• 1980 - July
• 1980 - August
• 1980 - September
• 1980 - October
• 1980 - November
• 1980 - December
• 1980 - Unknown dates
• 1980 - Nobel Prizes
• 1980 - Templeton Prize

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Cat 5 cables are often used in structured cabling for computer networks such as Fast Ethernet, although they are also used to carry many other signals such as basic voice services, token ring, and ATM (at up to 155 Mbit/s, over short distances). Cat 5e cable is an enhanced version of Cat 5 for use with 1000BASE-T (gigabit) networks, or for long-distance 100BASE-TX links (350 m, compared with 100 m for Cat 5). It must meet the EIA/TIA 568A-5 specification. Virtually all cables sold as Cat 5 are actually Ca ...

See also:

Category 5 cable, Category 5 cable - Usage and wiring methods, Category 5 cable - Straight-through crossover and Roll-over cables, Category 5 cable - Other categories of network cables

Read more here: » Category 5 cable: Encyclopedia II - Category 5 cable - Usage and wiring methods

Connexion may also refer to the in-flight online connectivity service by Boeing. This service allows travellers to access a high-speed internet connection while on board a plane in flight, either wirelessly or through a standard Ethernet connection. The infrastructure uses a phased array antenna or a mechanically steered Ku-band antenna on the aircraft, leased satellite transponders, and ground stations. Connexion by Boeing was first launched as a service May 17, 2004 with Lufthansa German Airlines. Later in 2004, ANA, Japan Ai ...

See also:

Connexion, Connexion - Connexion by Boeing, Connexion - Connexion by PhyQuest

Read more here: » Connexion: Encyclopedia II - Connexion - Connexion by Boeing

In computer science and information theory, the issue of error correction and detection has great practical importance. Error detection is the ability to detect errors that are made due to noise or other impairments in the course of the transmission from the transmitter to the receiver. Error correction has the additional feature that enables localization of the errors and correcting them. Error correction schemes permit error localization but also give the possibility of correcting errors that have been introduce ...

Including:

• Error correction and detection - Terminology
• Error correction and detection - Error detection
• Error correction and detection - Typical schemes
• Error correction and detection - Error correction
• Error correction and detection - Applications
• Error correction and detection - The Internet
• Error correction and detection - Deep Space Telecommunications Voyager
• Error correction and detection - Satellite Broadcasting DVB
• Error correction and detection - Information theory and error correction and detection
• Error correction and detection - List of error-detection methods
• Error correction and detection - List of error-correction methods

Read more here: » Error correction and detection: Encyclopedia - Error correction and detection

In computer networking, Carrier Sense Multiple Access With Collision Detection (CSMA/CD) is a network control protocol in which (a) a carrier sensing scheme is used and (b) a transmitting data station that detects another signal while transmitting a frame, stops transmitting that frame, transmits a jam signal, and then waits for a random time interval (known as "backoff delay" and determined using the truncated binary exponential backoff algorithm) before trying to send that frame again. CSMA/CD is a modification of pure Carrier Sense Multiple Acce ...

Read more here: » Carrier sense multiple access with collision detection: Encyclopedia - Carrier sense multiple access with collision detection

The Boeing 787, or Dreamliner, is a mid-sized wide body passenger airliner currently under development by Boeing Commercial Airplanes and scheduled to enter service in 2008. It will carry between 200 and 350 passengers depending on the seating configuration, and will be more fuel-efficient than comparable earlier airliners. In addition, it will be the first major airliner to use compos ...

Including:

• Boeing 787 - Background
• Boeing 787 - Commercial launch
• Boeing 787 - Orders and options
• Boeing 787 - Initial sales
• Boeing 787 - Japanese and other foreign program partners
• Boeing 787 - Current Sales Information January/ February 2006
• Boeing 787 - Features
• Boeing 787 - Variants
• Boeing 787 - Specifications
• Boeing 787 - Related content

Read more here: » Boeing 787: Encyclopedia - Boeing 787

Xerox Palo Alto Research Center (PARC) was a flagship research division of the Xerox Corporation, based in Palo Alto, California, USA. It was founded in 1970, and spun out as a separate company in 2002. It is best known for essentially creating the modern personal computer graphical user interface (GUI) paradigm. Xerox PARC - History. PARC's founding director, George Pake, was an outstanding physicist in the area of nuclear magnetic resonance. Dr. Pake had been serving as provost of Washington University in ...

Including:

• Xerox PARC - History
• Xerox PARC - Accomplishments
• Xerox PARC - Footnote

Read more here: » Xerox PARC: Encyclopedia - Xerox PARC

Wireless is an old-fashioned term for a radio receiver, referring to its use as a wireless telegraph. The term is widely used to describe modern wireless connections such as wireless broadband internet. Wireless - History. The founding principles and inventions of wireless technology can be found in the lectures and patent record of the electrical engineer Nikola Tesla and in his 1916 deposition on the history of wireless and radio cool technology. A wireless set was the radio receiver, referring to ...

Including:

• Wireless - History
• Wireless - Modern usage
• Wireless - Suggested reading

Read more here: » Wireless: Encyclopedia - Wireless

Xerox Corporation (NYSE: XRX) is the world's largest document-management company, providing the industry's broadest range of color and black-and-white printers, multifunction systems, copiers, digital production printing presses, and related consulting services and supplies. Corporate headquarters are in Stamford, Connecticut, though its largest population of employees is based in and around Rochester, New York, the area in which the company was founded. The company is so identified with its product that the term "Xerox machine ...

Including:

• Xerox - Business model shifts
• Xerox - Office paper
• Xerox - Accounting irregularities
• Xerox - Corporate structure
• Xerox - Diversity
• Xerox - Trademark issues

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Coaxial cable is an electrical cable consisting of a round conducting wire, surrounded by an insulating spacer, surrounded by a cylindrical conducting sheath, and usually surrounded by a final insulating layer. The cable is designed to carry a high-frequency or broadband signal, as a high-frequency transmission line. Sometimes DC power (called bias) is added to the signal to supply the equipment at the other end, as in direct broadcast satellite receivers. Because the electromagnetic field carrying the signal exists (ideally) only in the space between the inner and outer conductors, it cannot interfere with or suffe ...

Including:

• Coaxial cable - Signal propagation in coaxial cable
• Coaxial cable - Important parameters
• Coaxial cable - Standard cable types
• Coaxial cable - Uses of coaxial cable
• Coaxial cable - Types of coaxial cable
• Coaxial cable - Interference and troubleshooting
• Coaxial cable - Timeline

Read more here: » Coaxial cable: Encyclopedia - Coaxial cable

Asynchronous Transfer Mode, or ATM for short, is a cell relay network protocol which encodes data traffic into small fixed-sized (53 byte; 48 bytes of data and 5 bytes of header information) cells instead of variable sized packets as in packet-switched networks (such as the Internet Protocol or Ethernet). Asynchronous Transfer Mode - Introduction. ATM was intended to provide a single unified networking standard that could support both synchronous channel networking (PDH, SDH) and packet-based ...

Including:

• Asynchronous Transfer Mode - Introduction
• Asynchronous Transfer Mode - Successes and Failures of ATM Technology
• Asynchronous Transfer Mode - Recent Developments
• Asynchronous Transfer Mode - ATM Concepts
• Asynchronous Transfer Mode - Why Cells?
• Asynchronous Transfer Mode - Cells In Practice
• Asynchronous Transfer Mode - Why Virtual Circuits?
• Asynchronous Transfer Mode - Using Cells and Virtual Circuits For Traffic Engineering
• Asynchronous Transfer Mode - Types of Virtual Circuits and Paths
• Asynchronous Transfer Mode - Virtual Circuit Routing and Call Admission
• Asynchronous Transfer Mode - Structure of An ATM Cell

Read more here: » Asynchronous Transfer Mode: Encyclopedia - Asynchronous Transfer Mode

The Apple Newton, or simply Newton, was an early line of personal digital assistants developed, manufactured and marketed by Apple Computer from 1993 to 1998. The original Newtons were based on the ARM 610 RISC processor, and featured handwriting recognition. Apple's official name for the device was MessagePad; the term Newton was Apple's name for the operating system it used, but popular usage of the word Newton has grown to include the device and its software together. Apple Newton - The New ...

Including:

• Apple Newton - The Newton in development
• Apple Newton - Technical details
• Apple Newton - Outcome
• Apple Newton - eMate 300
• Apple Newton - Later efforts
• Apple Newton - Newton models
• Apple Newton - Appearances in popular culture
• Apple Newton - Other Uses
• Apple Newton - Jokes

Read more here: » Apple Newton: Encyclopedia - Apple Newton

An anonymous remailer is a server computer which receives messages with embedded instructions on where to send them next, and which forwards them without revealing where they originally came from. There are Cypherpunk anonymous remailers, Mixmaster anonymous remailers, and nym servers, among others which differ in how they work, in the policies they adopt, and in the type of attack on anonymity of email they can (are intended to) resist. Remailing as discussed in this article applies to emails intended for particular receipient ...

Including:

• Anonymous remailer - Types of remailers
• Anonymous remailer - Traceable remailers
• Anonymous remailer - Untraceable remailers
• Anonymous remailer - Web based mailer
• Anonymous remailer - Reasons for using an anonymous remailer
• Anonymous remailer - Using a remailer
• Anonymous remailer - Choosing a remailer
• Anonymous remailer - Remailer statistics
• Anonymous remailer - Remailer Software

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The Airbus A380 is a double-decker, four-engined airliner manufactured by Airbus S.A.S. It first flew on April 27, 2005 from Toulouse, France. Commercial flights should begin in late 2006 after 15 months of testing, with the delivery of the first aircraft to launch customer Singapore Airlines. During much of its development phase, the aircraft was known as the Airbus A3XX, and the term S ...

Including:

• Airbus A380 - Design
• Airbus A380 - Cockpit
• Airbus A380 - Engines
• Airbus A380 - Technological features
• Airbus A380 - Amenities
• Airbus A380 - Construction
• Airbus A380 - History
• Airbus A380 - Development
• Airbus A380 - First flights
• Airbus A380 - Orders
• Airbus A380 - Delivery
• Airbus A380 - Criticism
• Airbus A380 - Cabin pressurization
• Airbus A380 - Ground operations
• Airbus A380 - Wake turbulence
• Airbus A380 - Specifications
• Airbus A380 - General characteristics 800F Freighter in brown [12]
• Airbus A380 - Dimensions
• Airbus A380 - Weights and fuel capacity
• Airbus A380 - Performance
• Airbus A380 - Media
• Airbus A380 - Related content

Read more here: » Airbus A380: Encyclopedia - Airbus A380

A computer is a machine capable of processing data according to a program — a list of instructions. The data to be processed may represent many types of information including numbers, text, pictures, or sound. Computers can be extremely versatile. In fact, they are universal information processing machines. According to the Church-Turing thesis, a computer with a certain minimum threshold capability is in principle capable of performing the tasks of any other computer, from those of a personal digital assistant ...

Including:

• Computer - History of computing
• Computer - How computers work: the stored program architecture
• Computer - Digital circuits
• Computer - I/O devices
• Computer - Programs
• Computer - Computer applications
• Computer - Networking and the Internet
• Computer - Computing professions and disciplines

Read more here: » Computer: Encyclopedia - Computer

Asynchrony is the state of not being synchronized. Contrast with synchronous or plesiochronous systems. Examples: asynchronous circuit asynchronous communication Asynchronous Transfer Mode asynchronous serial interfaces packet switched systems such as Ethernet or internet protocol asynchronous computer APIs Collaborative editing systems Category: Communication ...

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The Commodore 64 (C64, CBM 64/CBM64, C= 64) is a home computer with 64 kilobytes of RAM that was popular in the 1980s. Released by Commodore Business Machines (CBM) to the public in August 1982 at a price of US$595, it offered sound and graphics performance that was good compared to the standard at that time. During the Commodore 64's lifetime (between 1982 and 1993), total sales exceeded 22 million units ...

Including:

• Commodore 64 - History
• Commodore 64 - Origins
• Commodore 64 - Winning the market war
• Commodore 64 - C64 successors and the 64C
• Commodore 64 - An active demoscene
• Commodore 64 - 1990s and 2000s hardware
• Commodore 64 - Hardware
• Commodore 64 - Graphics and sound
• Commodore 64 - Hardware revisions
• Commodore 64 - Power problems
• Commodore 64 - External hardware
• Commodore 64 - Software
• Commodore 64 - Representative screenshots
• Commodore 64 - Specifications
• Commodore 64 - Internal hardware
• Commodore 64 - I/O ports and power supply
• Commodore 64 - Trivia
• Commodore 64 - Notes

Read more here: » Commodore 64: Encyclopedia - Commodore 64

Broadband Internet access, often shortened to "broadband Internet" or just "broadband" is a high data-transmission rate internet connection. DSL and cable modem, both popular consumer broadband technologies, are typically capable of transmitting 256 kilobits per second or more, approximately nine times the speed of a modem using a standard digital telephone line. Broadband Internet access became a rapidly developing market in many areas in the early 2000s; one study found that broadband Internet usage in the Unite ...

Including:

• Broadband Internet access - Overview
• Broadband Internet access - Technology
• Broadband Internet access - Satellite Internet
• Broadband Internet access - Remote DSL
• Broadband Internet access - DSL repeater
• Broadband Internet access - Power-Line Internet
• Broadband Internet access - Wireless ISP
• Broadband Internet access - T-1/DS-1
• Broadband Internet access - Broadband issues by country
• Broadband Internet access - Australia
• Broadband Internet access - Brazil
• Broadband Internet access - Canada
• Broadband Internet access - France
• Broadband Internet access - Hong Kong
• Broadband Internet access - Ireland
• Broadband Internet access - India
• Broadband Internet access - Japan
• Broadband Internet access - Malta
• Broadband Internet access - New Zealand
• Broadband Internet access - Singapore
• Broadband Internet access - South Korea
• Broadband Internet access - Sweden
• Broadband Internet access - United Kingdom
• Broadband Internet access - United States

Read more here: » Broadband Internet access: Encyclopedia - Broadband Internet access