Delay Analyzing Between KS, SKS, Spaning Tree and Brentkung Adders
Supriya Sarkar1, Sanghita Deb2, Tejaswini R. Choudri3, Sudha Nair4
1Supriya Sarkar,M. Tech Student, Dept. of ECE, RKDF Institute of science and technology, Bhopal , India.
2Sanghita Deb,B. E Student , Dept of CSE, N.H College of engineering, BAMU , Aurangabad ,M.S, India.
3Tejaswini R. Choudri, Prof. Dept. of ECE, RKDF Institute of science and technology, Bhopal , India.
4Sudha Nair, Prof. Dept. of ECE, RKDF Institute of science and technology, Bhopal , India.
Manuscript received on November 11, 2013. | Revised Manuscript received on November 15, 2013. | Manuscript published on November 25, 2013. | PP: 9-12 | Volume-2 Issue-1, November 2013. | Retrieval Number: A0557112113/2013©BEIESP
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Abstract: Adders are known to have the frequently used in VLSI designs. In digital design we have half adder and full adder, main adders by using these adders we can implement ripple carry adders. RCA use to perform any number of addition. In this RCA is serial adder and it has commutation delay problem. If increase the ha&fa simultaneously delay also increase. That’s why we go for parallel adders(parallel prefix adders). In the parallel prefix adder are ks adder(koggestone),sks adder(sparse kogge-stone),spaning tree and brentkung adder. These adders are designed and caparisoned by using of area and delay constraints. Simulated and synthesis by model sim6.4b, Xilinx ise10.1
Keywords: RCA, KS, SKS, Spanning tree, Brentkung adder.