initial commit / add all books

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diff --git a/45/CH2/EX2.2/2_2.jpg b/45/CH2/EX2.2/2_2.jpg
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diff --git a/45/CH2/EX2.2/example_2_2.sce b/45/CH2/EX2.2/example_2_2.sce
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+//exmaple 2.2 

+//7404

+clc

+close

+clear

+//frq= input('Enter the square wave frequency in KHz :');

+frq=0.5 ;//KHz

+t=(1/frq)*100;

+t=round(t)

+for r=1:t*10

+    inputc(r)=0;

+    outputc(r)=0;

+end

+p=1;

+while p<t*10                                   // making arrays t plot the curve 

+    if p==1 | modulo(p,t)==0 then

+        for k=1:t/2

+            inputc(p+k)=0;

+            outputc(p+k)=1;

+        end

+        p=p+t/2;

+        else 

+            inputc(p)=1;

+            outputc(p)=0;

+            p=p+1;

+        end

+end

+y=[3 3];

+subplot(2,1,1)    //ploting the graphs 

+title('input at pin 1')

+xlabel('Time X 10^-5 seconds');

+ylabel('Magnitude')

+plot(inputc)

+plot(y)

+subplot(2,1,2)

+title('output at pin 2')

+xlabel('Time X 10^-5 seconds');

+ylabel('Magnitude')

+plot(outputc)

+plot(y)
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