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Microprocessor

Microprocessor
A field programmable ROM is called

 MROM
 FROM
 PROM
 FPROM

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

 XRI 0FH
 ANI 0FH
 ORI 0FH
 CMA

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Microprocessor
The control flags in 8086 are:

 the interrupt flag(IF).
All of these
 the direction flag(DF).
 the Trap flag(TF).

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Microprocessor
XCHG instruction exchanges the content of H-L with ______ register pair.

 D-E
 Stack Pointer
 PSW
 B-C

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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
 Bus Interface Unit (BIU)
 Both ‘c’ and ‘d’
 Execution Unit (EU)

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Microprocessor
In a microcomputer , the address of memory locations are binary numbers that identify each memory circuit where a byte is stored. If a microcomputer uses 20-bit address, then numbers of different memory locations are

 220
 20
 220 - 1
 220-1

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