302.

X is a passive two-terminal electrical component and is said to be the fourth circuit element. It is a fundamental non-linear circuit element relating charge and magnetic flux linkage. X was initially conceptualized by Y in 1971. The definition of the X is based solely on the fundamental circuit variables of current and voltage and their time-integrals, just like the resistor, capacitor, and inductor. Unlike those three elements however, which are allowed in LTI (Linear Time Invariant) system theory , X has a nonlinear function and may be described by any of a variety of functions of net charge. In 2008, a team at HP Labs announced the development of a X based on a thin film of titanium dioxide. In October 2011,HP labs announced the commercial availability of X within 18 months, as a replacement for Flash, SSD, DRAM and SRAM. Y received the Kirchoff award from IEEE in 2005 and also remarked "Now all the Electrical Engineering books need to be changed !!!".