Table 1 NEMS integrate different structures, devices, and subsystems. In a large-scale NEMS there is an integration of : * Thousands of nodes of high-performance actuators/sensors and smart structures controlled by ICs and antennas; »* High-performance processors or Superscalar multiprocessors; * Multi-level memory and storage hierarchies with different latencies (thousands of secondary and tertiary storage devices supporting data archives); * interconnected, distributed, heterogeneous databases; * High-performance communication networks