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Microprocessor

Microprocessor
Total numbers of output pins in 8085 microprocessor are

 30
 27
 40
 13

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Microprocessor
The characteristics of RESET OUT signal is/are

 all.
 the signal is synchronized to the processor clock.
 this signal can be used to reset other devices.
 indicates that µp is being reset.

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

 PAL
 PLA
 PLD
 PROM

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Microprocessor
Length of the instruction POP D is

 3 byte
 1 byte
 4 byte
 2 byte

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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
 SUB A
 CLR A

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Microprocessor
Which one of the following ICs is used to interface keyboard and display?

 8279
 8259
 8253
 8251

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