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Microprocessor

Microprocessor
The five flags in 8085 are designated as

Z, C, S, P, AC
Z, CY, S, D, AC
Z, CY, S, P and AC
D, Z, S, P, AC

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Microprocessor
Circuit A is a 1-bit adder; circuit B is a 1 bit multiplier.[Hint: Construct the truth table for the adder and the multiplier]

Circuit B has more gates than circuit A
None of these
Circuit A has more gates than circuit B
Circuit A has the same number of gates as circuit B

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Microprocessor
What is mean by ALU

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

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Microprocessor
Total numbers of output pins in 8085 microprocessor are

 13
 27
 30
 40

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Microprocessor
During which T-state, contents of OP code from memory are loaded into IR (Instruction Register)?

 T1 OP code fetch
 T3 OP code fetch
 T2 OP code fetch
 T4 OP code fetch

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

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

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