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Microprocessor

Microprocessor
DMA signal/signals in 8085 is/are

 HOLD.
 HLDA.
 READY.
 All.

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Microprocessor
If the sign bit of mantissa is 0 and the exponent is increased from a positive to a more negative number the result is

A smaller floating point number
A larger floating point number
Either A or B depending on the actual number
A negative floating point number

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Microprocessor
The program counter in a 8085 micro-processor is a 16-bit register, because

 There are 16 address lines
 It facilitates the user storing 16-bit data temporarily
 It counts 16-bits at a time
 It has to fetch two 8-bit data at a time

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Microprocessor
RST0 - RST7 are the __________ in 8085.

 logical interrupts
 software interrupts
 hardware interrupts
 conditional interrupts

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Microprocessor
A single instruction to clear the lower nibble of accumulator in 8085 language assembly is

 ANI OFH
 ANI F0H
 XRI FOH
 XRI 0FH

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Microprocessor
In a computer the data transfer between hard disk and CPU is nearly the same as that between diskette and CPU.

False
True

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