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Microprocessor

Microprocessor
If m is a power of 2, the number of select lines required for an m-input mux is:

m
log2 (m)
2^m
2*m

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Microprocessor
The data bus of any microprocessor is always

 Bi-directional
 Unidirectional
 Either unidirectional or bi-directional
 None

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Microprocessor
Identify the non-programmable interfacing device from the following

 8255.
 8212.
 8295.
 8257.

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Microprocessor
A 37 bit mantissa has an accuracy of

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

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Microprocessor
Which of the following is not treated as hexadecimal constant by assembler in 8085?

234
6 AFH
64 H
45 H

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Microprocessor
Which components are NOT found on chip in a microprocessor but may be found on chip in a microcontroller?

 EPROM, USART & PORTS
 SRAM & USART
 SRAM, EPROM & PORTS
 EPROM & PORTS

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