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Microprocessor

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

 DCR R
 XRA R
 ORA R
 DCX Rp

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Microprocessor
The relation among IC (Instruction Cycle), FC (Fetch cycle) and EC (Execute Cycle) is

 EC = IC + FC
 IC = FC + 2EC
 IC = FC - EC
 IC = FC + EC

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Microprocessor
The first microprocessor to include virtual memory in the intel microprocessor family is

 Pentium
 80286
 80386
 80486

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Microprocessor
Total number of modes the 8253 can work

 4
 12
 8
 6

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Microprocessor
In microprocessor based system I/O ports are used to interface

 the I/O devices and memory chips
 all the I/O devices
 the I/P device only
 the O/P devices only

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Microprocessor
An 8-bit microprocessor can have ………….. address lines.

 16
 32
 8
 cannot be predicted

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