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Microprocessor

Microprocessor
Which of the following instruction is not possible in 8085?

 POP D
 POP B
 POP PSW
 POP 30 H

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

 PLA
 PLD
 PAL
 PROM

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Microprocessor
Consider the following registers: 1. Accumulator and flag register 2. B and C register 3. D and E register 4. H and L register Which of these 8-bit registers of 8085 microprocessor can be paired together to make a 16-bit register?

 1, 3 and 4
 2, 3 and 4
 1, 2 and 4
 1, 2 and 3

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Microprocessor
The operations executed by two or more control units are referred as

 Multi-operations
 Macro-operations
 Micro-operations
 Bi control-operations

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Microprocessor
The number of interrupt lines in 8085 is

2
4
5
3

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Microprocessor
Inintel 8085A microprocessor ALE signal is made high to

 To achieve all the functions listed above
 To disable data bus
 Enable the data bus to be used as low order address bus
 To latch data D0-D7 from data bus

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