[Phillip] wanted to play with the C preprocessor. He decided to do that by creating a 4 bit full adder. We know this is pretty useless in everyday life, but it was a great learning experience.

Instead of going with silicon-based switching (ie: transistors) this 4-bit adder uses mechanical relays. We like it for its mess of wires (don’t miss the “assembly” page which is arguably ...

The design and optimisation of low-power full ... [4]. Full Adder: A fundamental digital circuit that computes the sum of binary numbers, including the propagation of carry bits. CMOS ...

In this paper, the authors present a design of Full Adder circuit using AVL techniques for low power operation. The approach for the design is based on XOR/XNOR & Transmission gate for single bit ...

Figure 4: CMOS-based pass-transistor XOR gate and a full adder. Figure 6: CMOS-based two-to-one MUX and two-to-four DEMUX. The CNT-based, high-performance CMOS FETs are fabricated with a doping ...