Question

Write an 8085 assembly language program to convert binary to bcd

Answer 1

8085 program to convert a BCD number to binary

Problem – Write an assembly language program for converting a 2 digit BCD number to its binary equivalent using 8085 microprocessor.

Examples:

Input : 72H (0111 0010)2

Output : 48H (in hexadecimal) (0011 0000)2

((4x16)+(8x1))=72

Algorithm:

Load the BCD number in the accumulator

Unpack the 2 digit BCD number into two separate digits. Let the left digit be BCD1 and the right one BCD2

Multiply BCD1 by 10 and add BCD2 to it

If the 2 digit BCD number is 72, then its binary equivalent will be

7 x OAH + 2 = 46H + 2 = 48H