International Journal of Electronics and Communication Engineering

7-16

Authors: R. SUGANYA & K. S. NATIYAA

The Full Adder circuit is an important component in application such as Digital Signal Processing (DSP) architecture, microprocessor, microcontroller and data processing units. This paper discusses the evolution of full adder circuits in terms of lesser power consumption and higher speed. Starting with the most conventional 28 transistors full adder and then gradually studied different types of full adders. This paper has also included some of the most popular full adder cells like Transmission gate full adder, pass transistor full adder, Static Energy Recovery Full Adder (SERF), Adder9B, GDI based full adder and Self resetting logic(SRL) with GDI full adder. The simulations have been carried out by Tanner EDA tools on 250nm technology.

23-28

Authors: Y. WANG & Y.F. TIAN

Two-dimensional electronic chart system can’t intuitively express the various information of 3D navigation environment, and the existing 3D electronic chart system lacks comprehensive display and scientific quantitative analysis. In that context, designed a 3D electronic chart system framework based on GIS and virtual reality technology (VR technology) and studied the key technologies such as visualization of 3D navigation environment, numerical simulation of water current and dynamic ship information display. Consequently, a 3D electronic chart system has been developed for Sutong Bridge section of Yangtze River waterway and it is verified to be feasible and reliable for ensuring safety of navigation.