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Microprocessor

Microprocessor
A 37 bit mantissa has an accuracy of

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

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Microprocessor
Which one of the following statement is false?

 A microprocessor has bi-directional data bus
 A microprocessor has unidirectional address bus
 A microprocessor has an ALU
 A microprocessor has bi-directional address bus

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Microprocessor
A number of 1-bit registers used in microprocessors to indicate certain conditions are usually referred to as

 flags
 latches
 counters
 shift registers

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Microprocessor
The control flags in 8086 are:

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

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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

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

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Microprocessor
While CMP B instruction executes,

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

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