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Microprocessor

Microprocessor
In a microprocessor based system the stack is always in

 ROM
 microprocessor
 EPROM
 RAM

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Microprocessor
Bus Interface Unit (BIU) in 8086 performs the following functions:

 Instruction fetch.
 Instruction decoding.
 All the above.
 Arithmatic and Logic operations.

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Microprocessor
The length of bus cycle in 8086/8088 is four clock cycles, T1, T2, T3, T4 and an indeterminate number of wait state clock cycles denoted by Tw. The wait states are always inserted between

 T4 & T1
 T3 & T4
 T1 & T2
 T2 & T3

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Microprocessor
When any data transfer instruction, to transfer the data from memory to microprocessor, is executed the condition flags are

 always set
 always reset
 affected indicating specific conditions
 not affected

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Microprocessor
A sequence of two registers that multiplies the content of DE register pair by two and stores the result in HL register pair (in 8085 assembly language) is

 XCHG & DAD H
 XTHL & DAD H
 XCHG & DAD B
 PCHL & DAD D

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Microprocessor
During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction.

 None of these
 Execution Unit (EU)
 Both ‘c’ and ‘d’
 Bus Interface Unit (BIU)

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