Our fast Logic Synthesis of FSM and combinational circuits reduces the circuit area of very complex Finite state machines and combinational circuits by as much as 50%, compared with results obtained by the best industrial tools from Synopsys, Xilinx, Altera and Mentor Graphics. At the same time, Synthagate runs faster than other tools by a factor of 10 or more. Fig. 1 presents the design flow of Logic Synthesizer.