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The size of instruction in a single accumulator CPU organization is $16$ bits. In order to evaluate the expressions given below. How much memory space (bytes) is required for storing the program? evaluate the expression from left to right).

Expression : $y=\frac{A-B+C}{E+F}$

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accumulator CPU organization:   in this organization first ALU operend is always required in the accumulator and second operend is present either in register and memory . after the processing result is placed into a accumulator.

Eveluating left to right 

evaluating right to left 

 

 

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