Touuch Screen Gadgets

The iPhone 4 will also sport what Jobs described as a “retina display” with four times the pixel density of a typical LCD display at a whopping 326 pixels per inch—by far denser than anything else in the consumer electronics market. The result is a 3.5-inch display with a native resolution of 960 by 640 pixels that is actually a higher resolution than the typical human eye is capable of perceiving, when held at a distance of just 10 to 12 inches. Jobs claims the iPhone 4’s display winds up looking like a high quality printed book (albeit that emits light!) rather than a blocky pixellated grid. The iPhone OS automatically handles rendering text and controls at the higher resolution for the iPhone 4, so developers don’t need to do anything to update their applications to look good on the new display…but, of course, if developers want to add higher-resolution graphics to their apps, they will look stunning on the iPhone 4.

(source :http://www.digitaltrends.com/mobile/apple-iphone-4/)

The iPad is a tablet computer designed, developed and marketed by Apple primarily as a platform for audio-visual media including books, periodicals, movies, music, games, and web content. At about 1.5 pounds (680 grams), its size and weight fall between those of contemporary smartphones and laptop computers. Apple released the iPad in April 2010, and sold 3 million of the devices in 80 days.
According to a report released by Strategy Analytics, the Apple iPad had gained a 95 percent share of Tablet PC sales at the end of second quarter 2010. During the second quarter 2010, Apple had sold 4.19 million iPads around the world.

  The iPad runs the same operating system as the iPod Touch and iPhone—and can run its own applications as well as iPhone applications. Without modification, it will only run programs approved by Apple and distributed via its online store.
Like iPhone and iPod Touch, the iPad is controlled by a multitouch display—a departure from most previous tablet computers, which used a pressure-triggered stylus—as well as a virtual onscreen keyboard in lieu of a physical keyboard. The iPad uses a Wi-Fi data connection to browse the Internet, load and stream media, and install software. Some models also have a 3G wireless data connection which can connect to HSPA data networks. The device is managed and synced by iTunes on a personal computer via USB cable.