Question

Write a program in 8086 assembly language, which converts an input of 4 ASCII digits to an equivalent hexadecimal number. For example, an input string of 4 ASCII digita, xay "4", "5", "3" "2," will be converted to the hexadecimal equivalent of number 4532, which is 11B4, Explain the algorithm of the program.

10 Feb 2025
Answer :
Word Count : 760
To solve the problem of converting a 4-digit ASCII input string into an equivalent hexadecimal number in 8086 assembly language, we can break the task down into the following steps: ### Algorithm: 1. Input the 4 ASCII Digits: - Read 4 ASCII digits (e.g., '4', '5', '3', '2') one by one. Each digit represents a number in the range 0-9 or A-F (for hexadecimal). 2. Convert ASCII to Decimal: - The ASCII code for the digits '0'-'9' is in the range 0x30 to 0x39. To convert the ASCII digit to its actual decimal value, subtract 0x30 (48 in decimal). 3. Calculate the Hexadecimal Equivalent: - Start with an initial value of 0. - Multiply the accumulated value by 10 (shift the place value) and add the _________ _______ ____ _________ __________.
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