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Microprocessor

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

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

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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.

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

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Microprocessor
The reason for the presence of ALE pin in 8085, but not in 6800 is that

 None
 8085 has multiplexed bus, whereas 6800 does not have
 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O
 8085 has 5 interrupts lines, whereas 6800 has only two

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Microprocessor
The program counter in a 8085 micro-processor is a 16-bit register, because

 It facilitates the user storing 16-bit data temporarily
 It counts 16-bits at a time
 There are 16 address lines
 It has to fetch two 8-bit data at a time

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Microprocessor
It is possible to copy a file in the same directory.

True
False

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

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

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