A computation core includes a computation block, an addressing block and an instruction sequencer, which are coupled to a memory through a memory interface. More particularly, it relates to a protein or a protein fragment for use in the diagnosis of Kaposi’s sarcoma or human herpesvirus 8 and to a diagnostic kit utilising the protein or protein fragment of the invention. A speaker grill structure may be formed by creating an array of small holes in a portable computer housing structure such as a planar housing wall. The efficiency of this invention depends on the number of switches in the network and the amount of traffic between pair of switches.