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Microprocessor

Microprocessor
DMA signal/signals in 8085 is/are

 HOLD.
 READY.
 All.
 HLDA.

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Microprocessor
Circuit A is a 1-bit adder; circuit B is a 1 bit multiplier.[Hint: Construct the truth table for the adder and the multiplier]

None of these
Circuit A has more gates than circuit B
Circuit B has more gates than circuit A
Circuit A has the same number of gates as circuit B

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Microprocessor
A microprocessor with a 12-bit address bus will be able to access

 1 K bytes
 8 K bytes
 10 K bytes
 4 K bytes

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Microprocessor
In microprocessor based system I/O ports are used to interface

 the O/P devices only
 all the I/O devices
 the I/O devices and memory chips
 the I/P device only

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Microprocessor
The number of interrupt lines in 8085 is

3
4
5
2

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Microprocessor
Identify the non-programmable interfacing device from the following

 8295.
 8257.
 8212.
 8255.

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