may crystallize memory material and u201c set u201d memory material e g program memory material to a logic u201c 1 u201d value various resistances of memory material may be achieved to store information by varying the amount of current flow and duration through the volume of memory material turning to fig5 a portion of a system 500 in accordance with an embodiment of the present invention is described system 500 may be used in wireless devices such as for example a personal digital assistant pda a laptop or portable computer with wireless capability a web tablet a wireless telephone a pager an instant messaging device a digital music player a digital camera or other devices that may be adapted to transmit and or receive information wirelessly system 500 may be used in any of the following systems a wireless local area network wlan system a wireless personal area network wpan system a cellular network although the scope of the present invention is not limited in this respect system 500 may include a controller 510 an input output i o device 520 e g a keypad display static random access memory sram 560 a memory 530 and a wireless interface 540 coupled to each other via a bus 550 a battery 580 may be used.