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Microprocessor

Microprocessor
A field programmable ROM is called

 MROM
 FROM
 PROM
 FPROM

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Microprocessor
The reason for the presence of ALE pin in 8085, but not in 6800 is that

 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O
 None
 8085 has multiplexed bus, whereas 6800 does not have
 8085 has 5 interrupts lines, whereas 6800 has only two

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Microprocessor
The stack pointer

 resides in RAM
 resides in ROM
 may be in RAM or ROM
 resides in microprocessor

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Microprocessor
I)A total of about one million bytes can be directly addressed by the 8086 microprocessor II)8086 has thirteen 16-bit registers III)8086 has eight flags IV)Compared to 8086, the 80286 provides a higher degree of memory protection Which one of the statements given above are correct?

 1,2 & 3
 1,3 &4
 1,2 & 4
 2,3&4

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Microprocessor
Total number of modes the 8253 can work

 6
 4
 8
 12

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Microprocessor
In an 8085 microprocessor based system, the contents of SP are 1000H, PUSH B instruction will transfer the contents of registers B & C respectively for memory locations

 0FFF H and 0FFE H
 1000 H and 1001 H
 0FFE H and 0FFF H
 1000 H and 0FFF H

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