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Microprocessor

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 pair of gates can form a latch?

A pair of cross coupled OR
A cross coupled NAND/OR
A pair of cross copled AND
A pair of cross coupled NAND

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Microprocessor
Let the content of accumulator and register B be 0000 0100 and 0100 0000 respectively before execution of instruction SUB B. The content of accumulator after the execution of this instruction will be

 010001000
 00000100
 11000100
 01000000

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Microprocessor
Identify the communication interfacing device from the following

 8251
 8257
 8155
 8255

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Microprocessor
While INX B instruction execute,

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

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Microprocessor
A mask programmed ROM is

 programmed at the time of fabrication
 erasable electrically
 erasable and programmable
 programmed by the user

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