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Microprocessor

Microprocessor
During OPCODE fetch the state of S0 and S1 is

 10
 00
 01
 11

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

 SUB A
 ORA A
 CLR A
 MOV A, 00H

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Microprocessor
How many 16-bit special purpose registers are present in 8085 microprocessor?

 8
 6
 2
 16

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Microprocessor
Which one of the following circuits transmits two messages simultaneously in one direction

 Duplex
 Quadruplex
 Diplex
 Simplex

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

 320ns
 640ns
 960ns
 1280ns

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Microprocessor
Of the following circuits, the one which involves storage is

Mux
RS Latch
Nand
Decoder

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