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Microprocessor

Microprocessor
Identify the communication interfacing device from the following

 8155
 8255
 8257
 8251

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Microprocessor
The five flags in 8085 are designated as

Z, C, S, P, AC
Z, CY, S, D, AC
Z, CY, S, P and AC
D, Z, S, P, AC

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

 8085
 6502
 Z-80
 68000

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Microprocessor
Number of Hex digits needed to represent the 20-bit address of a memory location are

 20
 4
 5
 16

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Microprocessor
PSW stands for

 accumulator contents
 flag byte
 none
 accumulator and flag register contents

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Microprocessor
The control flags in 8086 are:

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

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