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Microprocessor

Microprocessor
The word size of 8085 microprocessor is

 8-bit
 20-bit
 16-bit
 4-bit

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Microprocessor
Which of the following instruction will never affect the zero flag?

 ORA R
 DCR R
 XRA R
 DCX Rp

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Microprocessor
If m is a power of 2, the number of select lines required for an m-input mux is:

2*m
log2 (m)
2^m
m

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Microprocessor
While CMP B instruction executes,

 only carry flag will be affected.
 only carry and zero flags will be affected.
 no flags will be affected.
 all flags will be affected.

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Microprocessor
Which of the following is not treated as hexadecimal constant by assembler in 8085?

45 H
6 AFH
234
64 H

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Microprocessor
The control flags in 8086 are:

 the interrupt flag(IF).
All of these
 the direction flag(DF).
 the Trap flag(TF).

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