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Microprocessor

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

 ORA R
 DCR R
 XRA R
 DCX Rp

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Microprocessor
PSW stands for

 none
 accumulator contents
 flag byte
 accumulator and flag register contents

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Microprocessor
DMA signal/signals in 8085 is/are

 HLDA.
 HOLD.
 All.
 READY.

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Microprocessor
Of the following circuits, the one which involves storage is

Nand
Decoder
RS Latch
Mux

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Microprocessor
Which one of the following microprocessor is not an 8-bit microprocessor

 68000
 8085
 6502
 Z-80

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Microprocessor
Using one 8259 IC is equivalent to providing …………. INTR pins on 8085

 12
 8
 18
 16

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