Скачать или смотреть BCD Subtraction 8085 | Subtraction of two BCD numbers in 8085 | BCD subtraction in Tamil

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In this video, I’ll show you

AIM:
To create a program in assembly language to subtract two BCD (Binary Coded Decimal) numbers and store the result in memory.

ALGORITHM:
1. Load the first BCD number from memory into the accumulator.
2. Copy the accumulator to register B.
3. Load the second BCD number from memory into the accumulator.
4. Subtract the second BCD number from the B register, storing the result in the accumulator.
5. Perform a Decimal Adjust after Subtraction (DAA) to correct any borrow that may have occurred during subtraction.
6. Store the result of subtraction in memory at a specified address.
7. Halt the program.

For example:
Decimal 0 is represented as 0000 in BCD.
Decimal 1 is represented as 0001 in BCD.
Decimal 9 is represented as 1001 in BCD.
BCD is often used in digital systems, especially in applications where human-readable numbers are involved, such as digital displays, calculators, and some data storage systems.
For instance, if you have the decimal number 35, it would be represented in BCD as:
3 (0011) 5 (0101)
One of the benefits of using BCD is that it's easier to convert between binary and decimal representations compared to pure binary numbers, making it convenient for certain applications where arithmetic operations on decimal numbers are required.


Enjoy!


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