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

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

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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
In an 8085 microprocessor based system, the contents of SP are 2000H. POP H instruction will transfer the contents of memory location

 2001H and 2002H to H and L registers respectively
 2001H and 2000H to H and L registers respectively
 2000H and 1FFFH to H and L registers respectively
 2000H and 1999H to H and L registers respectively

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