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Microprocessor

Microprocessor
Total number of modes the 8253 can work

 12
 8
 6
 4

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Microprocessor
Which one of the following statement is false?

 A microprocessor has an ALU
 A microprocessor has unidirectional address bus
 A microprocessor has bi-directional address bus
 A microprocessor has bi-directional data bus

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Microprocessor
The data bus of any microprocessor is always

 None
 Either unidirectional or bi-directional
 Bi-directional
 Unidirectional

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Microprocessor
Which one of the following ICs is used to interface keyboard and display?

 8259
 8251
 8279
 8253

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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
When an 8085 microprocessor is reset, the address bus contains

 003CH
 0000H
 0043H
 002CH

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