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Microprocessor

Microprocessor
The number of status flags present in 8085 microprocessor are

 8
 16
 10
 5

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Microprocessor
An I/O processor controls the flow of information between

Main memory and I/O devices
Cache memory and I/O devices
Two I/O devices
Cache and main memory

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

True
False

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Microprocessor
Let the content of accumulator and register B be 0000 0100 and 0100 0000 respectively before execution of instruction SUB B. The content of accumulator after the execution of this instruction will be

 11000100
 010001000
 00000100
 01000000

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Microprocessor
In order to save accumulator value on the stack, which of the following instruction may be used

 PUSH PSW
 POP PSW
 PUSH A
 PUSH SP

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Microprocessor
In microprocessor based system DMA refers to

 direct memory access for the I/O device
 direct memory access for microprocessor
None of these
 direct memory access for the user

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