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Microprocessor

Microprocessor
The five flags in 8085 are designated as

Z, CY, S, P and AC
Z, C, S, P, AC
D, Z, S, P, AC
Z, CY, S, D, AC

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Microprocessor
In microprocessor based system I/O ports are used to interface

 all the I/O devices
 the O/P devices only
 the I/O devices and memory chips
 the I/P device only

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Microprocessor
SUB A instruction in 8085

 sets zero and sign flags
 reset zero and parity flags
 reset carry and sign flags
 sets zero and carry flags

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Microprocessor
We say that a set of gates is logically complete if we can build any circuit without using any other kind of gates. Which of the following sets are logically complete

Set of {AND,OR,NOT}
None of these
Set of {EXOR, NOT}
Set of {AND,OR}

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Microprocessor
The frequency of the driving network connected between pins 1 and 2 of 8085 microprocessor is

 four times the desired frequency
 equal to the desired frequency
None of these
 twice the desired frequency

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Microprocessor
A structure that stores a number of bits taken “together as a unit” is a

Gate
Mux
Decoder
Register

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