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Microprocessor

Microprocessor
The 8085 microprocessor uses a crystal of frequency 6.25 Mhz. The T-state value is

 640ns
 960ns
 1280ns
 320ns

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Microprocessor
A combinational PLD with a fixed AND array and a programmable OR array is called a

 PROM
 PLD
 PLA
 PAL

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Microprocessor
What is mean by ALU

 Arithmetic logic unsigned
 Arithmetic logic upgrade
 Arithmetic local unsigned
 Arithmetic logic unit

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Microprocessor
Which one of the following instruction may be used to clear the accumulator content irrespective of its initial value?

 ORA A
 MOV A, 00H
 CLR A
 SUB A

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

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

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Microprocessor
A microprocessor differentiates between op code, data/address at any time by

 its internal registers
 the sequence in which memory contents are fetched by it
 the stack pointer
 the program counter

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