A support for human joints is disclosed having first and second rods which are connected to each other via articulation means which permits reciprocal rotation of the two rods about a rotation pin. In one embodiment, a network packet is received from a host device, and a stored record associated with the host device is identified. A select switch or mechanism is preferably coupled to the input of the DA converter and operatively presents a digital input word to the DA converter by selectively reading the digital word from at least one of a data register and a fuse register. The L1 and L2 baseband signals are obtained from the corresponding RF signals. A scoring function in accordance with the normalized second-order hydrophobic moment for the protein structure may be determined.