A Survey of DDFS Architecture and Implementation

The team was able to reach a 4-bit ripple carry adder that has delay of 1.22 ns with 0.6 uW power consumption (measured at 10 MHz), with 109 transistors. In the re-evaluation phase, the team was able to further improve this to reach 0.99 ns delay with 0.25 uW power consumption … ................
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