Some about SMS

Short Message Service in short for it is call SMS, it is a text messaging service component of phone, web, or mobile communication systems, using standardized communications protocols that allow the exchange of short text messages between fixed line or mobile phone devices. SMS text messaging is the most widely used data application in the world, with 2.4 billion active users, or 74% of all mobile phone subscribers.The term SMS is used as a synonym for all types of short text messaging as well as the user activity itself in many parts of the world. SMS is also being used as a form of direct marketing known as SMS marketing. SMS as used on modern handsets was originated from radio telegraphy in radio memo pagers using standardized phone protocols .as a means of sending messages of up to 160 characters,to and from GSM mobile handsets.Since then, support for the service has expanded to include other mobile technologies such as ANSI CDMA networks and Digital AMPS, as well as satellite and landline networks.Most SMS messages are mobile-to-mobile text messages though the standard supports other types of broadcast messaging as well.

The Short Message Service – Point to Point (SMS-PP) was originally defined in GSM recommendation 03.40, which is now maintained in 3GPP as TS 23.040.GSM 03.41 (now 3GPP TS 23.041) defines the Short Message Service – Cell Broadcast (SMS-CB), which allows messages (advertising, public information, etc.) to be broadcast to all mobile users in a specified geographical area.
Messages are sent to a Short message service center (SMSC) which provides a "store and forward" mechanism. It attempts to send messages to the SMSC's recipients. If a recipient is not reachable, the SMSC queues the message for later retry.Some SMSCs also provide a "forward and forget" option where transmission is tried only once. Both mobile terminated (MT, for messages sent to a mobile handset) and mobile originating (MO, for those sent from the mobile handset) operations are supported. Message delivery is "best effort", so there are no guarantees that a message will actually be delivered to its recipient, but delay or complete loss of a message is uncommon, typically affecting less than 5% of messages. Some providers allow users to request delivery reports, either via the SMS settings of most modern phones, or by prefixing each message with *0# or *N#. However, the exact meaning of confirmations varies from reaching the network, to being queued for sending, to being sent, to receiving a confirmation of receipt from the target device, and users are often not informed of the specific type of success being reported.

Ebay Shopping Site Song in Youtube

                                                           Ebay Parody Song - Weird Al Yankovic

About Online Shopping Site Ebay

eBay Inc. is an American internet consumer-to-consumer (c2c) corporation that manages eBay.com, an online auction and shopping website in which people and businesses buy and sell a broad variety of goods and services worldwide. Founded in 1995, eBay is one of the notable success stories of the dot-com bubble; it is now a multi-billion dollar business with operations localized in over thirty countries.eBay expanded from its original "set-time" auction format to include "Buy It Now" standard shopping; shopping by UPC, ISBN, or other kind of SKU; online classified advertisements; online event ticket trading (via StubHub); online money transfers (via PayPal  and other services.
The online auction website was founded as AuctionWeb in San Jose, California, on September 3, 1995, by French-born Iranian-American computer programmer Pierre Morad Omidyar (born June 21, 1967) as part of a larger personal site that included, among other things, Omidyar's own tongue-in-cheek tribute to the Ebola virus.One of the first items sold on eBay was a broken laser pointer for $14.83. Astonished, Omidyar contacted the winning bidder to ask if he understood that the laser pointer was broken. In his responding email, the buyer explained: "I'm a collector of broken laser pointers."The frequently repeated story that eBay was founded to help Omidyar's fiancée trade Pez candy dispensers was fabricated by a public relations manager in 1997 to interest the media, which were not interested in the company's previous explanation about wanting to create a "perfect market"^.This was revealed in Adam Cohen's 2002 book, The Perfect Store,and confirmed by eBay.
Chris Agarpao was hired as eBay's first employee and Jeffrey Skoll was hired as the first president of the company in early 1996. In November 1996, eBay entered into its first third-party licensing deal, with a company called Electronic Travel Auction to use SmartMarket Technology to sell plane tickets and other travel products. Growth was phenomenal; in January 1997 the site hosted 2,000,000 auctions, compared with 250,000 during the whole of 1996.The company officially changed the name of its service from AuctionWeb to eBay in September 1997. Originally, the site belonged to Echo Bay Technology Group, Omidyar's consulting firm. Omidyar had tried to register the domain name echobay.com, but found it already taken by the Echo Bay Mines, a gold mining company,so he shortened it to his second choice, eBay.com.(Echobay.com is now owned by Echobay Partners, Ltd., a private equity firm based in Nevis.)
In 1997, the company received $6.7 million in funding from the venture capital firm Benchmark Capital.
Meg Whitman was hired as eBay President and CEO in March 1998. At the time, the company had 30 employees,half a million users and revenues of $4.7 million in the United States.eBay went public on September 21, 1998,and both Omidyar and Skoll became instant billionaires. eBay's target share price of $18 was all but ignored as the price went to $53.50 on the first day of trading.
As the company expanded product categories beyond collectibles into almost any saleable item, business grew quickly.In February 2002, the company purchased IBazar, a similar European auction web site founded in 1995 and then bought PayPal on October 14, 2002.
In early 2008, the company had expanded worldwide, counted hundreds of millions of registered users, 15,000+ employees and revenues of almost $7.7 billion.After nearly ten years at eBay, Whitman made the decision to enter politics. On January 23, 2008 the company announced that Whitman would step down on March 31, 2008 and John Donahoe was selected to become President and CEO.Whitman remained on the Board of Directors and continued to advise Donahoe through 2008. In late 2009, eBay completed the sale of Skype for $2.75 billion, but will still own 30% equity in the company.
In July 2010, eBay was sued for $3.8 billion by XPRT Ventures that accused eBay of stealing information shared in confidence by the inventors on XPRT's own patents, and incorporated it into features in its own payment systems, such as PayPal Pay Later and PayPal Buyer Credit
On December 20, 2010, eBay announced its acquisition of a German online shopping club, brands4friends.de, for €150 million ($197 million) to strengthen the company's interests in the fashion industry in Europe. It is subject to regulatory approval and expected to close it in the Q1 2011.

About the Infromation of Dial-up Internet access

Dial-up Internet access is a form of Internet access that uses the facilities of the public switched telephone network to establish a dialled connection to an Internet service provider (ISP) via telephone lines. The user's computer or router uses an attached modem to encode and decode Internet Protocol packets and control information into and from analogue audio frequency signals,respectively.
Modern dial-up modems typically have a maximum theoretical transfer speed of 56 kbit/s (using the V.90 or V.92 protocol), although in most cases 40–50 kbit/s is the norm. Factors such as phone line noise as well as the quality of the modem itself play a large part in determining connection speeds. Some connections may be as low as 20 kbit/s in extremely "noisy" environments, such as in a hotel room where the phone line is shared with many extensions, or in a rural area, many kilometres from the exchange. Other things such as long loops, loading coils, pair gain, electric fences (usually in rural locations), and digital loop carriers can also cripple connections to 20 kbit/s or lower.
Dial-up connections usually have latency as high as 300 ms or even more, this is longer than for many forms of broadband, such as cable or DSL, but typically less than satellite connections. Longer latency can make online gaming or video conferencing difficult, if not impossible. First person shooter style games are the most sensitive to latency, making playing them impractical on dial-up. Many modern video games do not even include the option to use dial-up. However, some games are capable of running on 56k dial-up.
An increasing amount of Internet content such as streaming media will not work at dial-up speeds.
Analog telephone lines are digitally switched and transported inside a Digital Signal 0 once reaching the telephone company's equipment. Digital Signal 0 is 64 kbit/s, therefore a 56 kbit/s connection is the highest that will ever be possible with analog phone lines.

3D Printing Videos

 

Here it will show the video if 3D printing

About 3D printing

3D printing is a form of additive manufacturing technology where a three dimensional object is created by laying down successive layers of material.3D printers are generally faster, more affordable and easier to use than other additive manufacturing technologies. 3D printers offer product developers the ability to print parts and assemblies made of several materials with different mechanical and physical properties in a single build process. Advanced 3D printing technologies yield models that can serve as product prototypes.
Standard applications include design visualization, prototyping/CAD, metal casting, architecture, education, geospatial, healthcare and entertainment/retail. Other applications would include reconstructing fossils in paleontology, replicating ancient and priceless artifacts in archaeology, reconstructing bones and body parts in forensic pathology and reconstructing heavily damaged evidence acquired from crime scene investigations.
More recently, the use of 3D printing technology for artistic expression has been suggested.Artists have been using 3D printers in various ways.
3D printing technology is currently being studied by biotechnology firms and academia for possible use in tissue engineering applications where organs and body parts are built using inkjet techniques. Layers of living cells are deposited onto a gel medium and slowly built up to form three dimensional structures. Several terms have been used to refer to this field of research: organ printing, bio-printing, and computer-aided tissue engineering, among others.3D printing can produce a personalized hip replacement in one pass, with the ball permanently inside the socket, and even at current printing resolutions the unit will not require polishing.
The use of 3D scanning technologies allow the replication of real objects without the use of molding techniques, that in many cases can be more expensive, more difficult, or too invasive to be performed; particularly with precious or delicate cultural heritage artifacts where the direct contact of the molding substances could harm the surface of the original object.
There have been several, often related, efforts to develop 3D printers suitable for desktop use, and to make this technology available at price points affordable to many individual end-users. Much of this work was driven by and targeted to DIY/enthusiast/early adopter communities, with links to both the academic and hackercommunities.
RepRap is a project that aims to produce a FOSS 3D printer, whose full specifications are released under the GNU General Public License, that can copy some part of itself (the printed parts). As of November 2010, the RepRap can only print plastic parts. Research is under way to enable the device to print circuit boards too, as well as metal parts. The average price of a RepRap printer is about 400 euro.
3D printer kits can also be obtained. Kits exist for Thing-O-Matic, Ultimaker, and Shapercube 3D printers.Prices of these printers are about 1500 euro.
The MakerBot is an open source 3D printer from MakerBot Industries.MakerBot Thing-O-Matic

Fab Home is an open source personal injection printer developed at Cornell University, designed for printing food and many other materials.

About Inverter

An inverter is an electrical device that converts direct current to alternating current; the converted AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits.Solid-state inverters have no moving parts and are used in a wide range of applications, from small switching power supplies in computers, to large electric utility high-voltage direct current applications that transport bulk power. Inverters are commonly used to supply AC power from DC sources such as solar panels or batteries.

The inverter performs the opposite function of a rectifier.

Basic designs

In one simple inverter circuit, DC power is connected to a transformer through the centre tap of the primary winding. A switch is rapidly switched back and forth to allow current to flow back to the DC source following two alternate paths through one end of the primary winding and then the other. The alternation of the direction of current in the primary winding of the transformer produces alternating current (AC) in the secondary circuit..
The electromechanical version of the switching device includes two stationary contacts and a spring supported moving contact. The spring holds the movable contact against one of the stationary contacts and an electromagnet pulls the movable contact to the opposite stationary contact. The current in the electromagnet is interrupted by the action of the switch so that the switch continually switches rapidly back and forth. This type of electromechanical inverter switch, called a vibrator or buzzer, was once used in vacuum tube automobile radios. A similar mechanism has been used in door bells, buzzers and tattoo guns.
As they became available with adequate power ratings, transistors and various other types of semiconductor switches have been incorporated into inverter circuit designs.