Microprocessor
While CMP B instruction executes,

 only carry and zero flags will be affected.
 no flags will be affected.
 only carry flag will be affected.
 all flags will be affected.

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Microprocessor
DS directive in 8085

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

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Microprocessor
Ready pin of microprocessor is used

 to indicate that microprocessor is ready to receive inputs
 to indicate that microprocessor is ready to receive outputs
 to introduce wait state
 to provide direct memory access

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