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Microprocessor

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

 80386
 80486
 Pentium
 80286

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Microprocessor
Total number of modes the 8253 can work

 4
 6
 8
 12

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Microprocessor
In a microcomputer , the address of memory locations are binary numbers that identify each memory circuit where a byte is stored. If a microcomputer uses 20-bit address, then numbers of different memory locations are

 220-1
 20
 220
 220 - 1

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Microprocessor
When an 8085 microprocessor is reset, the address bus contains

 0043H
 003CH
 002CH
 0000H

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Microprocessor
Assertion(A): Address bus is unidirectional. Reason(R): Data bus is bidirectional

 Both A & R are true but R is not the correct explanation of A
 A is false but R is true
 A is true but R is false
 Both A & R are true and R is the correct explanation of A

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Microprocessor
The 8085 microprocessor uses a crystal of frequency 6.25 Mhz. The T-state value is

 1280ns
 960ns
 320ns
 640ns

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