Microprocessor
‘Burst refresh’ in DRAM is also called

Concentrated refresh
Hidden refresh
None of these
Distributed refresh

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

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Microprocessor
In 8085 microprocessor , let the accumulator contains the value 0AH and register C contains the value 05H. After CMP C instruction is executed, the

 zero and carry flags will be reset
 zero flag will be set and carry flag will be reset
 zero flag will be reset and carry flag will be set
 zero and carry flags will be set

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