4-4 Boolean Anal ysis of Logic Circuits (逻辑电路分析) 1.Logic Circuit(逻辑电路图) D CDB (3+CD To derive the boolean expression for a given combinational logic circuit, begin at the left-most inputs and work toward the final output, writing the expression for each gate 2. Boolean Expression ⅹ=A(B+CD3 4-4 Boolean Analysis of Logic Circuits （逻辑电路分析） 1.Logic Circuit (逻辑电路图） To derive the Boolean expression for a given combinational logic circuit , begin at the left-most inputs and work toward the final output , writing the expression for each gate. 2.Boolean Expression A ( B + C D ) C D B + C D X=A(B+CD)