A Multi Logic Memory cell have various logic between one and zero that's why fuzzy logic is also known as multiplelogic level, when the paper work was in plan originally plan was do something in Fuzzy Electronics. Lots of fuzzy systems is been developed already but from observing fuzzy flip-flops working the idea comes for the proposed work. Paper work propose designs of a new fuzzy memory cell(flip-flop) for four logic levels which can hold Logic 0, Logic 1, Logic 2 & Logic 3 total four fix logic .though fuzzy logic deals with approximate logic rather than fix proposed work has fix logic and it is the big difference between proposed work and fuzzy based memory cell. Proposed work also has design an Interfacing module between fuzzy memory with Digital) systems, just for make proposed four logic flip-flop compatible with existing binary logic based digital system application for proposed design that one can reduce the no. of wires required when to establish parallel interface with memory and also one can increase the speed or throughput of simple serial data transfer.

The Cognitive Radio Network is intelligent network, which has the capability to efficiently utilize the available spectrum using various spectrum-sensing techniques, in addition with the intelligent energy consumption and bandwidth allocation. In this paper we are simulating the cognitive radio network using Monte-Carlo simulation model. The proposed system is tested under Additive White Gaussian noise (AWGN) channel and Rayleigh Fading Channel environment. During simulation the probability of detection (Pd) is calculated for given signal to noise ratio (SNR) and false alarm rate (Pf). To enhance the system performance median filter is implemented which significantly enhances the performance of detection probability for given SNR and Pf.

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In current scenario, electronic devices handling confidential information. In these devices encryption algorithm proposed have been satisfy to protect the confidential information and known for their cryptographic applications. The extensively use of reconfigurable processor like FPGA for cryptographic application which have reduced the time to market of hardware logic. In this survey presented that the FPGA-based hardware architecture is best approach for high performance of circuit, it reduces the response time and resources. This hardware architecture work on Verilog as well as VHDL language.