In ASCII representation, decimal numbers are stored as string of ASCII characters. For example, the decimal value 1234 is stored as: 31 32 33 34H Where, 31H is ASCII value for 1, 32H is ASCII value for 2, and so on. There are the following four instructions for processing numbers in ASCII representation: AAA - ASCII Adjust After Addition AAS - ASCII Adjust After Subtraction AAM - ASCII Adjust After Multiplication AAD - ASCII Adjust Before Division These instructions do not take any operands and assumes the required operand to be in the AL register.

Computer Networking: A Top-Down Approach (7th Edition)
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Author:James Kurose, Keith Ross
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Chapter1: Computer Networks And The Internet
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ASCII
In ASCII representation, decimal numbers are stored as string of ASCII characters. For example, the decimal
value 1234 is stored as:
31
32
33
34H
Where, 31H is ASCII value for 1, 32H is ASCII value for 2, and so on. There are the following four instructions for
processing numbers in ASCIIl representation:
AAA - ASCII Adjust After Addition
AAS - ASCII Adjust After Subtraction
AAM - ASCII Adjust After Multiplication
AAD - ASCII Adjust Before Division
These instructions do not take any operands and assumes the required operand to be in the AL register.
The following evample uses the AAS instruction to demonstrate the concent:
Transcribed Image Text:In ASCII representation, decimal numbers are stored as string of ASCII characters. For example, the decimal value 1234 is stored as: 31 32 33 34H Where, 31H is ASCII value for 1, 32H is ASCII value for 2, and so on. There are the following four instructions for processing numbers in ASCIIl representation: AAA - ASCII Adjust After Addition AAS - ASCII Adjust After Subtraction AAM - ASCII Adjust After Multiplication AAD - ASCII Adjust Before Division These instructions do not take any operands and assumes the required operand to be in the AL register. The following evample uses the AAS instruction to demonstrate the concent:
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