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Microprocessor

Microprocessor
Temporary registers in 8085 are

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

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Microprocessor
The multiplexing of address bus and data buses is used in

 never multiplexed.
 all the microprocessors.
 depends on the internal architecture.
 none of these.

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Microprocessor
A microcomputer consists of

 I/O device
All of these
 a microprocessor
 memory

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Microprocessor
XCHG instruction exchanges the content of H-L with ______ register pair.

 B-C
 PSW
 Stack Pointer
 D-E

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

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

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Microprocessor
After RESET 8255 will be in

 mode 0; all ports are output
 mode 2
 mode 0; all ports are input
 unchanged condition

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