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Microprocessor

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

 Duplex
 Diplex
 Simplex
 Quadruplex

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Microprocessor
A microprocessor without the interrupt facility

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

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Microprocessor
In a computer the data transfer between hard disk and CPU is nearly the same as that between diskette and CPU.

False
True

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Microprocessor
_____________is used to read the status of the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by loading into the A register a byte which defines the condition of the mask bits for the interrupts.

 DI
 SIM
 EI
 RIM

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Microprocessor
The number of hardware interrupts present in 8085 microprocessor are

 10
 16
 8
 5

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Microprocessor
Let the content of register C be 00000000 before the instruction DCR C is executed. The content of register C after the after the execution of this instruction will be

 11111111
 None
 00000000
 00000001

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