Microprocessor
A good assembly language programmer should use general purpose registers rather than memory in maximum possible ways for data processing. This is because:

 Of limited set of instructions for data processing with memory
 Data processing with registers is easier than with memory
 Data processing with memory requires more instructions in the program than that with registers
 Data processing with registers takes fewer cycles than that with memory

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Microprocessor
When .9432 E – 4 is subtracted from .5452 E – 3 in normalized floating point mode

Both Ihe numbers are changed and their exponents are, made equal to -5
.5452 E – 3 is changed to 5.452 E – 4 but .9432 E – 4 is not changed
.9432 E – 4 is changed to .09432 E – 3 and .5452 E – 3 is not changed
None of the numbers is changed

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Microprocessor
DS directive in 8085

Forces the assembler to reserve a specified number of bytes in the memory
Forces the assembler to reserve one byte of memory
Forces the assembler to reserve a specified number of consecutive bytes in the memory
None of these

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