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Microprocessor

Microprocessor
In Fortran 77 a variable name can contain special characters.

False
True

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Microprocessor
Which instruction is required to rotate the content of accumulator one bit right along with carry?

 RAL
 RLC
 RAR
 RRC

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Microprocessor
A bus connected between the CPU and main memory that permits transfer of information between main memory and the CPU is known as

 DMA bus
 Memory bus
 Control bus
 Address bus

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Microprocessor
Temporary registers in 8085 are

 D and E.
 H and L.
 W and Z.
 B and C.

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

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

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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
 2,3&4
 1,2 & 4
 1,3 &4

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