initial commit / add all books

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diff --git a/2522/CH7/EX7.4/exm7_4.sce b/2522/CH7/EX7.4/exm7_4.sce
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+//page no 222

+//example no 7.4

+// USE OF ADDRESSING MODES.

+clc;

+//register B contains 32H

+B=32;

+

+//using indirect addressing modes

+printf('B= %d \n',B);

+disp(' 1) LXI H,8000H'); // loads HL register pair.

+disp('H=80H     L=00H'); 

+disp('MOV M,B'); // contents of register B are moved in memory location pointed by HL register pair.

+M=B; 

+printf('\n 8000H --> %d \n \n',M);

+

+disp('LXI D,8000H'); //loads the memory location 8000H in DE register pair.

+disp('D=80H     E=00H'); 

+disp('MOV A,B');

+A=B;

+printf('A= %d \n',A);

+disp('STAX D'); //stores the value of accumulator in the memory location pointer by DE register pair.

+printf('\n 8000H --> %d \n \n',A);

+

+//using direct addressing mode.

+disp('2) A= F2H');

+disp('STA 8000H'); //this instruction stores the value of accumulator in the memory location 8000H.

+disp('8000H --> F2H');

+

+//using indirect addressing mode.

+disp('3) LXI H,8000H'); // loads HL register pair.

+disp('H=80H     L=00H'); 

+disp('MVI M,F2H'); //moving the data in the memory.

+disp('8000H --> F2H');

diff --git a/2522/CH7/EX7.4/exm7_4_output1.jpg b/2522/CH7/EX7.4/exm7_4_output1.jpg
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diff --git a/2522/CH7/EX7.4/exm7_4_output2.jpg b/2522/CH7/EX7.4/exm7_4_output2.jpg
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