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@@ -0,0 +1,86 @@
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+SYS_EXIT equ 1
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+SYS_READ equ 3
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+SYS_WRITE equ 4
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+STDIN equ 0
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+STDOUT equ 1
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+
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+segment .data
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+
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+ msg1 db "Enter a digit ", 0xA,0xD
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+ len1 equ $- msg1
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+
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+ msg2 db "Please enter a second digit", 0xA,0xD
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+ len2 equ $- msg2
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+
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+ msg3 db "The sum is: "
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+ len3 equ $- msg3
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+
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+segment .bss
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+
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+ num1 resb 2
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+ num2 resb 2
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+ res resb 1
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+
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+section .text
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+ global _start ;must be declared for using gcc
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+
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+_start: ;tell linker entry point
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+ mov eax, SYS_WRITE
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+ mov ebx, STDOUT
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+ mov ecx, msg1
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+ mov edx, len1
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+ int 0x80
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+
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+ mov eax, SYS_READ
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+ mov ebx, STDIN
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+ mov ecx, num1
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+ mov edx, 2
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+ int 0x80
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+
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+ mov eax, SYS_WRITE
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+ mov ebx, STDOUT
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+ mov ecx, msg2
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+ mov edx, len2
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+ int 0x80
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+
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+ mov eax, SYS_READ
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+ mov ebx, STDIN
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+ mov ecx, num2
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+ mov edx, 2
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+ int 0x80
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+
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+ mov eax, SYS_WRITE
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+ mov ebx, STDOUT
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+ mov ecx, msg3
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+ mov edx, len3
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+ int 0x80
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+
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+ ; moving the first number to eax register and second number to ebx
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+ ; and subtracting ascii '0' to convert it into a decimal number
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+
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+ mov eax, [num1]
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+ sub eax, '0'
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+
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+ mov ebx, [num2]
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+ sub ebx, '0'
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+
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+ ; add eax and ebx
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+ add eax, ebx
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+ ; add '0' to to convert the sum from decimal to ASCII
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+ add eax, '0'
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+
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+ ; storing the sum in memory location res
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+ mov [res], eax
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+
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+ ; print the sum
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+ mov eax, SYS_WRITE
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+ mov ebx, STDOUT
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+ mov ecx, res
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+ mov edx, 1
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+ int 0x80
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+
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+exit:
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+
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+ mov eax, SYS_EXIT
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+ xor ebx, ebx
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+ int 0x80
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