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Microprocessor

Microprocessor
What is the size (in bytes) of Prefetch queue in 8086?

 6.
 4.
 3.
 2.

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Microprocessor
In 8085 name/names of the 16 bit registers is/are

 stack pointer.
 both A and B.
 program counter.
 none of these.

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Microprocessor
EPROMs are preferred for storing programs while developing new microprocessor based system. Because of their

 random access characteristic
 non-volatile characteristic
 erasable and programmable characteristic
 all the above characteristic

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Microprocessor
Let the content of register C be 00000000 before the instruction DCR C is executed. The content of register C after the after the execution of this instruction will be

 None
 11111111
 00000001
 00000000

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Microprocessor
A 37 bit mantissa has an accuracy of

6 decimal places
10 decimal places
11 decimal places
8 decimal places

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

 ORA R
 DCR R
 DCX Rp
 XRA R

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