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programb35 - Microprocessors Applications(UPTU Appendix B...

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Microprocessors & Applications (UPTU) Appendix B  Explanation : Consider that a block of data of N bytes is present at the source location. Let the number of bytes N = 10 for example. We have to initialize this as count in the CX register. Our task is to find out the average of these 10 bytes. i.e. to find out average of 10 numbers. Average = . We know that the source address is in the SI register. Clear the direction flag. Initially, we will add the N bytes, byte by byte using ADD instruction. Once the addition is compute, result of addition will be stored in register AX. Now, we will divide this sum by number of bytes N to find the average. The result of division i.e. quotient is present in the AL register. Display the result using display routine. For example : Block Data : 01 02 03 04 05 06 07 08 09 0A Sum : 01 + 02 + 03 + 04 + 05 + 06 + 07 + 08 + 09 + 0AH = 37 H average = = = 5 H  Algorithm : Step I : Initialise the data segment. Step II : Initialise SI with source address.
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