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Microprocessor

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

 PROM
 PAL
 PLA
 PLD

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Microprocessor
The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

 irrelevant
 same as the content of A7-A0
 all bits reset (i.e. 00H)
 all bits set (i.e. FFH)

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Microprocessor
In 8085 microprocessor which one of the following statement is wrong

 there is a pin available for serial input
 serial I/O is possible through SIM and RIM instruction
 there is a pin available for serial output
 serial I/O is not possible

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

 Diplex
 Simplex
 Duplex
 Quadruplex

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Microprocessor
Pick out the matching pair

 SID; SIM
 HOLD; DMA
 S0;S1;wait status
 READY; RIM

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Microprocessor
The addressing mode in instruction PUSH B is

 direct
 immediate
 register indirect
 register

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