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Microprocessor

Microprocessor
Identify the communication interfacing device from the following

 8251
 8155
 8257
 8255

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Microprocessor
The cycle required to fetch and execute an instruction in a 8085 microprocessor is which one of the following?

 Memory cycle
 Clock cycle
 Machine cycle
 Instruction cycle

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Microprocessor
In order to complement the lower nibble of accumulator one can use

 ORI 0FH
 XRI 0FH
 ANI 0FH
 CMA

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Microprocessor
How many segments are there in 8086?

 4.
 2.
 6.
 3.

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

 0024H.
 0048H.
 0060H.
 0030H.

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Microprocessor
A microprocessor without the interrupt facility

 is not useful for process control system
 cannot be used for DMA operation
 cannot be interfaced with any I/O devices
 is best suited for process control system

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