Introduction
Over the past several years, tremendous advances have taken place in the design and performance of personal computers. CPUs having faster processing speed and smaller dimensions are being routinely manufactured for today's PCs. For example, a high end Pentium 4 (P4) CPU for desktop PCs has typical processing capability and speed up to 1,500 MIPS and 2.4 GHz, respectively [l]. Typical P4 CPU dimensions are 35 by 35 mm [I].