Abstract : 
Designers of 100-million-transistor chips face daunting challenges, most especially in dealing with switching currents, optimization, asynchronization, reuse, and design skills. Certain subjects-interconnections, for example-will prove to cut across all five topics. All the same, the issues offer a useful view on what designers will face in handling these complexities. These five topics are discussed in the paper
         
        
            Keywords : 
integrated circuit design; optimisation; switching; 100-million-transistor chips; IC design; asynchronization; design skills; interconnections; optimization; reuse; switching currents; Capacitors; Circuit noise; Current supplies; Power dissipation; Power grids; Power supplies; Rails; Semiconductor device modeling; Subspace constraints; Voltage;