initial commit / add all books

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diff --git a/911/CH8/EX8.2.a/ex_8_2_a.pdf b/911/CH8/EX8.2.a/ex_8_2_a.pdf
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+++ b/911/CH8/EX8.2.a/ex_8_2_a.pdf
diff --git a/911/CH8/EX8.2.a/ex_8_2_a.sce b/911/CH8/EX8.2.a/ex_8_2_a.sce
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+//example 8.2 (a)//

+clear

+//clears the screen//

+clc

+//clears the variable//

+close

+//R =input('Enter the value of the resistance R in Kohms : ')//

+//C =input('Enter the value of the Capacitance C in micro farads : ' ) ;

+sp =input ('Enter the spacing between two input pulses in microseconds: ' );

+R =10;

+//taking give values//

+C =0.01;

+t= 693* R*C;

+//calculting time constant//

+tt=t*10;

+p =1;

+len =sp*60 -1;

+q =1;

+for j=1: len 

+//plotin the graphs//

+lo = sp *10;

+f= modulo (j,lo);

+if f ==0 then

+inpu (j)=1;

+else

+inpu (j)=0;

+end

+inpu (1) =1;

+o(j)=2;

+end

+while q<len

+result (q) =0;

+q=q+1;

+end

+while p<len

+if inpu (p)==1 then

+for k=1: tt

+result (p+k) =1;

+end

+p=p+tt;

+else

+result (p) =0;

+p=p+1;

+end

+end

+subplot (2 ,1 ,1);

+//ploting bothe graphs in same window//

+plot (o);

+plot ( inpu );

+xlabel ( ' time X10^􀀀7 seconds ' );

+ylabel ( 'Magnitude ' ) ;

+title ( ' input pulses ' );

+subplot (2 ,1 ,2);

+plot (o);

+plot ( result );

+xlabel ( ' t ime X10^􀀀7 seconds' );

+ylabel ( 'Magnitude' );

+title ( ' Output ' );
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