ARM holding has introduced the Cortex-A7, a new microprocessor design that will be used in sub US$-100
smartphones, as well as in high end smartphones alongside with the more powerful Cortex-15.

ARM design the chip used in most of the world's smartphones and tablets, including Apple's iPad and iPhone.The A7 will be the most energy efficient chip design to date, ARM said at a press conference in San Fransisco wednesday . Samples are due next  year, and A7 will appear in entry level smartphones by 2013 , ARM said.