UNIVERSAL SHIFT REGISTER IMPLEMENTATION USING QUANTUM DOT CELLULAR AUTOMATA

Quantum-dot Cellular Automata (QCA) demands to be a promising alternative of CMOS in ultra large scale circuit integration.Arithmetic and logic unit designs using QCA are of high research interest.A layout of four and eight bit universal shift register (USR) has been proposed.Initially QCA layouts of D Totes flip-flop with clear and 4 to 1 multiple

Laser has been used efficiently for treatment of oral lichen planus, leukoplakia, aphthous ulcers and oral manifestations of HIV.Two cases of recalcitrant oral pemphigus vulgaris that were successfully treated with CO 2 laser are described.The patients had been treated by a dermatologist with pulse therapy of methyl prednisolone and cyclophosphamid