Microprocessor
DS directive in 8085

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

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Microprocessor
Which one of the following is not correct?

 An instruction is a set of bits that defines a computer operation
 Bootstrap is a technique or device for loading first instruction
 An interrupt signal is required at the start of every program
 Bus is a group of wires

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Microprocessor
Assertion(A): The frequency of 8085 system is ½ of the crystal frequency. Reason(R): Microprocessor (8085) requires a two phase clock.

 A is true but R is false
 Both A & R are true and R is the correct explanation of A
 A is false but R is true
 Both A & R are true but R is not the correct explanation of A

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