Wednesday, May 13, 2009

History of the iPhone

The History of the iPhone began with Steve Jobs' direction that Apple engineers investigate touch-screens. At the time he had been considering having Apple work on tablet PCs. Many have noted the device's similarities to Apple's previous touch-screen portable device, the Newton MessagePad. Like the Newton, the iPhone is nearly all screen. Its form factor is credited to Apple's head of design, Jonathan Ive .The first advertisement for iPhone, titled "Hello," aired during the 79th Academy Awards on February 25, 2007 on ABC. The ad features clips from several notable films and television shows over the last seventy years, showing iconic characters answering telephones and saying "hello" or a similar greeting. The iPhone is shown at the end with the caption "Hello. Coming in June."

The commercial was created by TBWA\Chiat\Day, Apple's ad agency since CEO Steve Jobs' return to the company in 1997. TBWA's Media Arts Lab will continue to handle all upcoming advertising for iPhone, much as it has for iPod. On June 3, 2007, Apple released four advertisements that announce a June 29, 2007 release date, and which concluded, "Use requires minimum new 2 year activation plan."; the footnote has since been removed from all four of the ads. A fifth ad featuring YouTube was released on June 21, 2007. All five advertisements feature a voice over describing various iPhone features, demonstrated on-screen. The song "Perfect Timing (This Morning)" by Orba Squara plays in the background.

The first publicly released iPhone 3G ad was first shown at WWDC 2008 Since then, iPhone 3G ads have been similar to those of the original iPhone; however, the background is white and the music used is "You, Me, and the Bourgeoisie" by The Submarines and can be viewed on Apple's website.One iPhone television advertisement was banned in the UK after the Advertising Standards Authority decided that the ad made false claims about the device's ability to access websites, and did not mention limitations in doin

Wednesday, May 06, 2009

RF connector

An RF connector is an electrical connector designed to work at radio frequencies in the multi-megahertz range. RF connectors are typically used with coaxial cables and are designed to maintain the shielding that the coaxial design offers. Better models also minimize the change in transmission line impedance at the connection. Mechanically they provide a fastening mechanism (thread, bayonet, braces, push pull) and springs for a low ohmic electric contact while sparing the gold surface thus allowing above 1000 reconnects and reducing the insertion force. Research activity in the area of radio-frequency (RF) circuit design has surged in the last decade in direct response to the enormous market demand for inexpensive, high data rate wireless transceivers.