₹16,000.00Original price was: ₹16,000.00.₹8,000.00Current price is: ₹8,000.00.
Source : Verilog HDL
Abstract:
Today, reversible logic can be used for designing low-power CMOS circuits, optical data processing, DNA computations, biological researches, quantum circuits and nanotechnology. Sometimes using of reversible logic is inevitable such as build quantum computers. Reversible logic circuits structure is much more complicated than irreversible logic circuits. Multiplication operation is considered as one of the most important operations in the ALU unit. In this paper, we have proposed two 4×4 reversible unsigned multiplier circuits in which Wallace tree method is used to reduce the depth of circuits. In first design, the partial products circuit is designed using TG and FG gates so that TG is used to produce the partial products and FG for fan-out. In the second design, TG and PG gates are used to produce the partial products and no fan-out is required. Moreover, we have used PG gate and Feynman' block as reversible half-adder (HA) and full-adder (FA) in the summation network, respectively. In the first design, the main purpose is to decrease the depth of the circuit and increase the circuit speed. In the second design we would attempt to improve quantum parameters the number of garbage outputs, constant inputs and quantum cost. The evaluation results show that the first design, in terms of delay, is the fastest circuit. Also, the second design in terms of the number of constant inputs, garbage outputs and quantum cost is better than other designs.
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₹25,000.00Original price was: ₹25,000.00.₹16,000.00Current price is: ₹16,000.00.
Source : Verilog HDL
Abstract:
Major operation block in any processing unit is a multiplier. There are many multiplication algorithms are proposed, by using which multiplier structure can be designed. Among various multiplication algorithms, Wallace tree multiplication algorithm is beneficial in terms of speed of operation. With the advancement of technology, demand for circuits with high speed and low area is increasing. In order to improve the speed of Wallace tree multiplier without degrading its area parameter, a new structure of Wallace tree multiplier is proposed in this paper. In the proposed structure, the final addition stage of partial products is performed by parallel prefix adders (PPAs). In this paper, five Wallace tree multiplier structures are proposed using Kogge stone adder, Sklansky adder, Brent Kung adder, Ladner Fischer adder and Han carlson adder. All the multiplier structures are designed using Verilog HDL in Xilinix 13.2 design suite. The proposed structures are simulated using ISIM simulator and synthesized using XST synthesizer. The proposed designs are analyzed with respect to traditional multiplier design in terms of area (No. of LUTs) and delay (ns).
List of the following materials will be included with the Downloaded Backup:
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