LATEST TECHNOLOGIES: 2010

i Phone 4

The iPhone 4 features a redesigned structure , designed by Jonathan Ive. Most notably , the bulges of the back panel as well as the band between the front & back are gone & have been replaced with flattened surfaces. The redesign reflects the utilitarianism & uniformity of existing Apple products, such as the IPad & the iMac. The only remnant of the previous generations of iPhone is the general layout of the device; the distinctive metal structure of the iPhone4 is more reminiscent of the 3G & 3GS. The overall dimensions of the iPhone 4 have been reduced from its predecessor. It is 4.5 inches ( 110mm) high, 2.31 inches (59mm) wide & 0.37 inches (9.4mm) deep, compared to the iPhone 3GS, which is 4.55 inches (116mm) high, 2.44 inches (62mm) wide, & 0.48 inches (12mm) deep; making the iPhone 4 24% thinner than its predecessor, the iPhone 3GS.
Steve jobs claims that it is " the thinnest smart phone on the planet." The devices reduced size is primary due to the antennas being placed externally.
Steve Jobs , CEO at Apple , holding a white iPhone 4.

The i Phone 4 is structured around a stainless steel frame which both acts as the primary structure for the device, & additionally acts as the iPhone 4's antennae. The stainless steel enclosure features three slits that divide the band into three sections; the left section of band acts as the Blue tooth , Wi-Fi , & GPS & antenna , & the right & lower bands sections act as the antenna for GSM & UMTS connectivity, There is some debate as to whether or not not this causes issues with signal strength & availability, The act of touching the gap between the two antennas with an UN- gloved hand potentially bridges these two separate antennas , leading to poor signal reception.

The internal components are situated between two panels of aluminosilicate glass , described by Apple as being " chemically strengthened to be 20 times stiffer and 30 times harder than plastic , " theoretically allowing it to be more scratch resistant and durable than the previous models.

The iPhone 4 switches the placement of the microphone & speaker on the base on the unit the speaker is now on the left.

Display

The display on the iPhone 4 is designed by Apple and is manufactured by LG, it features an LED back lit LCD capacitive touchscreen with a pixel density of 326 pixels per inch (ppi) on a 3.5 inches (8.9 cm) (960-by-640) display, each pixel is 78 micrometers in width. The display has a contrast ratio of 800:1 . The screen is marketed by apple as the "Retina display," based on the assertion that a display of approximately 300 ppi at a distance of 12 inches (305mm) from one's eye is the maximum amount of detail that the human retina can process.

iPad

The iPad is a tablet computer designed and marketed by Apple for Internet browsing , media consumption, gaming, and light content creation . Released in April 2010, it established a new class of devices between smart phones and laptops. As of may 3, 2010, Apple had sold 1 million iPads.

Similar to the older ( and smaller ) iPod Touch and iPhone , the iPad runs a modified version of the iPhone OS and is controlled by a multi-touch LCD sensitive to fingertips , not a stylus. It runs iPad - specific applications as well as those written for the iPhone and iPod touch, including e- book readers.

The iPad uses Wi-Fi or its 3G data connection to browse the Internet, load and stream media, and install software, A USB cable is required to sync the iPad with iTunes on a personal computer.

SCREEN AND INPUT

The touchscreen is a 25 cm (9.7 in ) liquid crystal display (1024*768 pixels , 132 ppi, XGA ) with fingerprint-resistant and scratch-resistant glass. Like the iPhone, the iPadis designed to be controlled by bare fingers , not gloves and styli that prevent electrical conductivity (although there are gloves and styli designed for this use.)

The display responds to two other sensors: an ambient light sensor to adjust screen brightness and a 3-axis accelerometer to sense ipad orientation and switch between portrait and landscape modes . Unlike the iphone and ipod touch , which work in three orientations, the iPad supports screen rotation in all four orientations , meaning that the device has no intrinsic "up" or "down" ; only the position of the home button changes. Most iPad applications support both portrait and landscape mode.

The iPad has a switch to lock out this screen rotation function ( reportedly to prevent unintended rotation when the user is lying down) . There are a total of four physical switches, including a home button below the display that returns the user to the main menu , and three plastic physical switches on the sides: wake/sleep and volume up/down , along with the screen rotation lock.

CONNECTIVITY

The iPad can use Wi-Fi network trilateration from sky hook wireless to provide location information to applications such as Google Maps. The 3G model contains A-GPS while both models have a digital compass.

The back of the Wi-Fi model ipad is made of contoured aluminium with black plastic buttons. The Wi-Fi+ 3G model also has a black plastic accent on top of the device which helps with 3G radio sensitivity . The ipad does not have any ports for wired connectivity.

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USES OF TECHNOLOGIES IN DIFFERENT FORMS

TELEVISION

Television is certainly one of the most influential forces of our time . Through the device called a television set or TV , we are able to receive news, sports, entertainment, information and commercials., etc. The average American spends between two and five hours a day glued to "the tube"!

Have anyone ever wondered about the technology that makes television possible? How is it that dozens or hundreds of channels of full- motion video arrive at our house , in many cases for free? How does our television decode the signals to produce the picture ? How will the new digital television signals change things ? If we have ever wondered about our television ( or, for that matter , about our computer monitor), then read on! In this article we will answer all of these questions and more.

TV PIXELS AND OUR BRAIN

Let's start at beginning with a quick note about our brain. There are two amazing things about our brain that make television possible.

By understanding these two facts , we can gain a good bit of insight into why televisions are designed the way they are.

The standard piece of video that we see on our TV everyday embodies two principles that make it possible.

The first principle is this: If we divide a still image into a collection of small colored dots, our brain will reassemble the dots into a meaningful image.This is no small feat, as any researcher who has tried to program a computer to understand a images will tell us. The only way we can see that this is actually happening is to blow the dots up so big that our brains can no longer assemble them, like this:

Most people , sitting right up close to their computer screens , cannot tell what it is a picture of - the dots are too big for our brain to handle. If we stand 10 to 15 feet away from our monitor, however, our brain will be able to assemble the dots in the image and we will clearly see that it as it was meant to be seen. By standing at a distance , the dots become small enough for our brain to integrate them into a recognizable image.

Both televisions and computer screens (as well as newspaper and magazine photos ) rely on this fusion - of - small - colored - dots capability in the human brain to chop pictures up into this fusion-of-small-colored-dots capability in the human brain to chop pictures up into thousands of individual elements . On a TV or computer screen , the dots are called pixels . The resolution of our computer's screen might be 800*600 pixels , or may be 1024*768 pixels.

The human brain's second amazing feature relating to television is this : If we divide a moving scene into a sequence of still pictures / images in rapid succession, the brain will reassemble the still images into a single , moving scene.

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