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Microprocessor

Microprocessor
The number of interrupt lines in 8085 is

2
5
3
4

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Microprocessor
In 8085 microprocessor, the RST6 instruction transfer programme execution to following location

 0030H.
 0048H.
 0024H.
 0060H.

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Microprocessor
Which of the following pair of gates can form a latch?

A cross coupled NAND/OR
A pair of cross coupled OR
A pair of cross coupled NAND
A pair of cross copled AND

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Microprocessor
XCHG instruction exchanges the content of H-L with ______ register pair.

 B-C
 D-E
 Stack Pointer
 PSW

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Microprocessor
Identify the communication interfacing device from the following

 8155
 8257
 8251
 8255

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

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

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