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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 SP
 POP PSW
 PUSH A

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

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Microprocessor
Which one of the following circuits transmits two messages simultaneously in one direction

 Simplex
 Quadruplex
 Duplex
 Diplex

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Microprocessor
The 8085 microprocessor enters into bus idle machine cycle whenever

 DAD RP instruction is executed
None of these
 RST 7.5 is recognized
 INTR interrupt is recognized

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Microprocessor
Which of the data transfer is not possible in microprocessor

 memory to accumulator
 memory to memory
 accumulator to memory
 I/O device to accumulator

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Microprocessor
If the sign bit of mantissa is 0 and the exponent is increased from a positive to a more negative number the result is

A smaller floating point number
A larger floating point number
Either A or B depending on the actual number
A negative floating point number

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