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Microprocessor

Microprocessor
In order to save accumulator value on the stack, which of the following instruction may be used

 PUSH PSW
 PUSH A
 PUSH SP
 POP PSW

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Microprocessor
In 8085, the pins for SID and SOD are

3 and 4 respectively
5 and 4 respectively
4 and 5 respectively
4 and 3 respectively

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Microprocessor
Which of the following conditions is not allowed in an RS latch?

R is asserted, S is asserted
R is asserted, S is negated
R is negated, S is asserted
R is negated, S is negated

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Microprocessor
A combinational PLD with a programmable AND array and a programmable OR array is called a

 PAL
 PLD
 PROM
 PLA

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Microprocessor
In 8086 the number of bytes which can be addressed directly is about

10000
one million
1000
100000

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Microprocessor
A single instruction to clear the lower nibble of accumulator in 8085 language assembly is

 ANI OFH
 XRI 0FH
 XRI FOH
 ANI F0H

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