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Microprocessor

Microprocessor
Pick up the programmable interrupt controller from the following

 8279
 8257
 8275
 8259

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Microprocessor
Which of the following instruction will never affect the zero flag?

 XRA R
 ORA R
 DCX Rp
 DCR R

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Microprocessor
The 8085 microprocessor enters into bus idle machine cycle whenever

 RST 7.5 is recognized
None of these
 INTR interrupt is recognized
 DAD RP instruction is executed

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Microprocessor
The instruction set of a microprocessor

 is specified by the manufacturers
 is specified by the user
 is stored inside the microprocessor
 cannot be changed by the user

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Microprocessor
Output of the assembler in machine codes is referred to as

 Macroinstruction
 Symbolic addressing
 Object program
 Source program

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

 PSW
 B-C
 D-E
 Stack Pointer

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