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+// Example 7.42
+// Calculation of a)Bit rate of communication system  b)Bit duration c)Time period
+// Page no 504
+
+clc;
+clear;
+close;
+
+//Given data
+f=8*10^3;                    // Power launched in port 1
+P2=0.082*10^-6;              // Power launched in port 2
+P3=47*10^-6;                // Power launched in port 3 
+P4=52*10^-6;                // Power launched in port 4
+
+// a)Bit rate of communication system
+c=32*8;
+B=f*c; 
+B=B*10^-6;
+// b)Bit duration
+D=1/B;
+D=D*10*10^2;
+P=8*D;
+
+
+// c)Time period
+T=32*P;
+T=T*10^-3;
+
+
+//Displaying results in the command window            
+printf("\n Bit rate of communication system(in Mb/s) = %0.3f  ",B);
+printf("\n Bit duration(in ns) = %0.0f  ",D);
+printf("\n Time period(in micro sec)= %0.0f  ",T);
+
+// The answers vary due to round off error