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Microprocessor

Microprocessor
DMA signal/signals in 8085 is/are

 All.
 HOLD.
 READY.
 HLDA.

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Microprocessor
The address bus width of a microprocessor which is capable of addressing 64 Kbytes of the memory is

 12
 8
 16
 20

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Microprocessor
Using DeMorgan’s Theorem we can convert any AND-OR structure into

NAND-NOR
OR-NAND
NOR-NAND
NAND-NAND

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Microprocessor
Number of Hex digits needed to represent the 20-bit address of a memory location are

 16
 5
 4
 20

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Microprocessor
After RESET 8255 will be in

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

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

 RLC
 RAL
 RRC
 RAR

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