A novel combinational digital device for finding maximum magnitude among the 'n' input numbers is proposed. This maximum magnitude generator (MaxMG) generates maximum magnitude as an output by utilising the bit by bit approach from multiple input (multi-bit) values simultaneously. MaxMG generates output from most significant bit (MSB) to least significant bit (LSB) in parallel, which utilises a minimum number of gate counts among the multi-bit of multiple input values. The minimum magnitude generator is also derived by applying the dual function to the MaxMG. The proposed design is implemented using Synopsys 90 nm generic library and RTL is written using Verilog HDL. The performance of the proposed design is compared with a rank based Kth max selection algorithm, a parallel tree based maximum generator utilised comparator-multiplexer combination, an array-based maximum finder (AB) and improved quad tree (IQT). The bit by bit parallel processing at the inputsfrom MSB to LSB, and the simple architecture utilising a minimum number of gates, makes the proposed design more energy efficient when compared with the Kth max algorithm, the tree based maximum finder, the AB based maximum finder, and the IQT architecture.
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