Friday, November 30, 2007

A Brief History of the Internet

By default, any ultimate history of the Internet must be short, since the Internet in one form or another has only been in certainty for less than 30 years. The first iteration of the Internet was launched in 1971 with a group of people showing in early on 1972. This new network, familiar as ARPANET. It means Advanced Research Projects Agency Network was very antique by today's standards, but a purpose in computer interactions. ARPANET was based upon the design concepts of Larry Roberts (MIT) and was fleshed out at the first ACM tutorial, held in Gaithersburg, TN in 1966, even though RFPs weren't sent out until mid 1968.

The responsibility of safety in 1969 commissioned ARPANET, and the first node was created at the University of California in Los Angeles, management on a Honeywell DDP-516 mini-computer. The second node was familiar at Standford University and launched on October first of the same year. The third node was placed at the University of California, Santa Barbara November 1, 1969 and the fourth was open at the University of Utah in December.

Sunday, November 11, 2007

Wireless Application Protocol

WAP is an open global standard for application that uses wireless communication. Its main application is to allow access to the internet from a mobile phone or PDA.
A WAP browser is to grant all of the fundamental services of a computer based web browser but cut down to function within the limits of a mobile phone. WAP is now the protocol used for the mainstream of the world's mobile internet sites, known as WAP sites. Presently the Japanese i-mode system is the only other major competing wireless data protocol.

Mobile internet sites, or WAP sites, are websites written in, or vigorously transformed to, WML (Wireless Markup Language) and accessed via the WAP browser. Before the introduction of WAP, service providers had enormously restricted opportunities to offer interactive data services.

Sunday, November 04, 2007

Cable car

A cable car or cable railway is a mass transportation system using rail cars that are propelling by a constantly moving cable running at a constant speed. Individual cars stop and start by release and gripping this cable as required. Cable cars are distinct from funiculars, where the cars are eternally attached to the cable.
The cable is itself powered by a stationary motor or engine located in a cable house or power house. The speed at which it moves is relatively constant, although artificial by the current load.
The cable car begins moving when a clamping device, called a grip, is linked to the moving cable. Conversely the car is stopped by flak it from the cable and applying the brakes. This gripping and ungripping action may be manual, as was the case in all early cable car systems, or routine, as is the case in some recent cable operated people mover type systems. Gripping must is an even and gradual process in order to avoid bringing the car to cable speed too quickly and unacceptably jarring the passengers.