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Xerox was founded in 1906 in Rochester as The Haloid Photographic Company,[8] which originally manufactured photographic paper and equipment. The company subsequently changed its name to Haloid Xerox in 1958 and then simply Xerox in 1961.[9] Xerography, a modern word meaning "dry writing" developed from two Greek roots, is the name of the process invented in 1938 and developed by the Haloid Company. The company came to prominence in 1959 with the introduction of the Xerox 914,[10] the first plain paper photocopier using the process of Electro-photography, (later changed to xerography) discovered by Chester Carlson, which he developed with John H. Dessauer.

Light-emitting diode

A light-emitting diode (LED) is a semiconductor light source.[3] LEDs are used as indicator lamps in many devices and are increasingly used for other lighting. Introduced as a practical electronic component in 1962,[4] early LEDs emitted low-intensity red light, but modern versions are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness. When a light-emitting diode is forward-biased (switched on), electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence and the color of the light (corresponding to the energy of the photon) is determined by the energy gap of the semiconductor. LEDs are often small in area (less than 1 mm2), and integrated optical components may be used to shape its radiation pattern.[5] LEDs present many advantages over incandescent light sources including lower energy consumption, longer lifetime, improved robustness, smaller size, and faster switching. LEDs powerful enough for room lighting are relatively expensive and require more precise current and heat management than compact fluorescent lamp sources of comparable output. Light-emitting diodes are used in applications as diverse as aviation lighting, automotive lighting, advertising, general lighting, and traffic signals. LEDs have allowed new text, video displays, live video, and sensors to be developed, while their high switching rates are also useful in advanced communications technology. Infrared LEDs are also used in the remote control units of many commercial products including televisions, DVD players, and other domestic appliances.

ASUS lifted the veil over its long-awaited redesigned 9.2mm thin PadFone at the MWC. Sporting a 4.3-inch Super AMOLED qHD display, Snapdragon S4 with the new Adreno 225 GPU, and 8MP camera with LED flash and f/2.2 aperture, as well as 16-64GB of internal storage plus microSD slot, it has what we would expect from a modern high-end. Connectivity is taken care of 42Mbps HSPA+ radio, Wi-Fi, Bluetooth 4.0, HDMI and A-GPS, while a 1,520mAh battery unit is included as a juicer. The Padfone can get inserted into an optional tablet frame, whose 10.1 inch screen then gets powered by the phone itself, and can extend your battery life significantly. There is another dock, which allows you to add a detachable keyboard accessory, like on the Transformer Pad series. This one also comes with a stylus that except for doodling can be used to receive your phone calls as well, considering that the phone is inserted in the mothership.

«Nous exposons notre cerveau à cet environnement et nous lui demandons de faire des choses qui ne font peut-être pas partie d'une évolution normale, résumait il y a quelques semaines le neurologue américain Adam Gazzaley, de l'Université de Californie, dans les pages du New York Times.

le mythe de l'humain multitâche et hautement productif avec son iPhone en main qui lui permet de suivre les cours de la Bourse, de programmer sa télévision à distance, de gérer sa bibliothèque musicale, de tenir à jour son agenda, d'informer ses amis de ses déplacements tout en téléchargeant des livres d'histoires à lire à ses enfants le soir avant de se coucher.

La technologie tend à reconfigurer les connexions du cerveau, mais elle est aussi contre-productive lorsqu'utilisée avec excès, estiment les chercheurs, et le fléau touche certainement la majorité des ménages dans les sociétés hautement numériques