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Microprocessor

Microprocessor
Identify the communication interfacing device from the following

 8255
 8257
 8251
 8155

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Microprocessor
The length of bus cycle in 8086/8088 is four clock cycles, T1, T2, T3, T4 and an indeterminate number of wait state clock cycles denoted by Tw. The wait states are always inserted between

 T3 & T4
 T2 & T3
 T1 & T2
 T4 & T1

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Microprocessor
Using DeMorgan’s Theorem we can convert any AND-OR structure into

NOR-NAND
NAND-NAND
OR-NAND
NAND-NOR

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Microprocessor
The first microprocessor to include virtual memory in the intel microprocessor family is

 80486
 80386
 Pentium
 80286

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Microprocessor
A microprocessor without the interrupt facility

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

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Microprocessor
During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction.

 None of these
 Execution Unit (EU)
 Bus Interface Unit (BIU)
 Both ‘c’ and ‘d’

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