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Microprocessor

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

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

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Microprocessor
Which one of the following microprocessor has 16-bit data bus?

 Z-80
 8085
 6502
 68000

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Microprocessor
DMA signal/signals in 8085 is/are

 All.
 HLDA.
 HOLD.
 READY.

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Microprocessor
The data lines of 8085 microprocessor are multiplexed with

 lower order address lines
 status lines
None of these
 higher order address lines

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Microprocessor
In an intel 8085A, which is the first machine cycle of an instruction?

 A memory write cycle
 An op-code fetch cycle
 A memory read cycle
 An I/O read cycle

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Microprocessor
Which of the following is not a general purpose peripheral?

Programmable CRT controller
I/O port
Programmable interrupt controller
Programmable interval timer

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