The calculator is created by using assembly code for 8086 system. To develop and test the program we used a emulated system (emu8086). The program will ask for the requested operation first then use the decision-making section made by Jump instruction to do the required Operation. Then it will ask for the two-digit number which can be taken as 2 deferred digit and calculated to be a single number. Then we will use Procedure of assembly language to create the Defer-Operation and make them functional. We will have four operation Addition, Subtraction, Multiplication, Division. We can implement the operation by using ADD, SUB, MUL, DIV functions of assembly. For the multiplication section we can use any numbers of others we will calculate the operation between the two numbers. And for the