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diff --git a/1223/CH17/EX17.2/Ex17_2.sce b/1223/CH17/EX17.2/Ex17_2.sce
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+++ b/1223/CH17/EX17.2/Ex17_2.sce
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+clear;
+clc;
+//Example 17.2
+Vx=-0.7;
+Vy=Vx;
+Vbe=0.7;
+V2=-5.2;
+Re=1.180;
+vE=Vx-Vbe;
+printf('\nemitter voltage =%.2fV\n',vE)
+iE=(vE-V2)/Re;
+printf('\nemitter current=%.2f mA\n',iE)
+Icxy=iE;
+vo1=-0.7;
+Rc1=-vo1/Icxy;
+printf('\nRc1=%.2f KOhm\n',Rc1)
+Vnor=vo1-Vbe;
+printf('\nNOR output logic 0 value=%.2f V\n',Vnor)
+Vr=(vo1+Vnor)/2;
+vE=Vr-Vbe;
+printf('\nvE=%.2f V\n',vE)
+iE=(vE-V2)/Re;
+printf('\niE=%.2f mA\n',iE)
+vo2=-0.7;
+iC2=iE;
+Rc2=-vo2/iC2;
+printf('\nRc2=%.2f KOhm\n',Rc2)
+Vor=vo2-Vbe;
+printf('\nOR logic 0 value is=%.2f V\n',Vor)