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diff --git a/2582/CH4/EX4.3/Ex4_3.sce b/2582/CH4/EX4.3/Ex4_3.sce
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+//Ex 4.3
+clc;clear;close;
+VDD=3;//V(Supply Voltage)
+VOH=VDD;//V
+VOL=0;//V
+Vth=VDD/2;//V
+VIL=VDD/2;//V
+VIH=VDD/2;//V
+NMH=VOH-VIH;//V
+NML=VIL-VOL;//V
+disp(Vth,"Vth(V)");
+disp(VIL,"VIL(V)");
+disp(VIH,"VIH(V)");
+disp(VOL,"VOL(V)");
+disp(VOH,"VOH(V)");
+disp(NML,"NML(V)");
+disp(NMH,"NMH(V)");
+//Gain=(VOH-VOL)/(VIH-VIL)=infinity as VIH=VIL;//Gain in the transition region
+Gain=%inf;//
+disp(Gain,"Gain in the transition region");
+//Answer in the book is wrong for the gain.