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Microprocessor

Microprocessor
A 37 bit mantissa has an accuracy of

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

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

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Microprocessor
An I/O processor controls the flow of information between

Cache and main memory
Two I/O devices
Main memory and I/O devices
Cache memory and I/O devices

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Microprocessor
The ROM programmed during manufacturing process itself is called

 PROM
 EPROM
 MROM
 EEPROM

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Microprocessor
The control flags in 8086 are:

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

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Microprocessor
The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

 irrelevant
 all bits set (i.e. FFH)
 same as the content of A7-A0
 all bits reset (i.e. 00H)

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