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Microprocessor

Microprocessor
Using one 8259 IC is equivalent to providing …………. INTR pins on 8085

 18
 8
 16
 12

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

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Microprocessor
The 8085 microprocessor uses a crystal of frequency 6.25 Mhz. The T-state value is

 1280ns
 320ns
 640ns
 960ns

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Microprocessor
Identify the communication interfacing device from the following

 8255
 8251
 8257
 8155

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Microprocessor
In Fortran 77 a variable name can contain special characters.

True
False

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

 3.
 2.
 6.
 4.

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