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Microprocessor

Microprocessor
Identify the programmable DMA controller from the following

 8257
 8279
 8253
 8251

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Microprocessor
A real number consists of

Integer part, fraction part along with positive or negative sign
None of these
Integer part and fraction part
Integer part

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

 16
 12
 18
 8

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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 A has the same number of gates as circuit B
Circuit B has more gates than circuit A

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Microprocessor
The minimum number of transistors required to implement a two input AND gate is

6
4
8
2

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Microprocessor
During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction.

 None of these
 Both ‘c’ and ‘d’
 Execution Unit (EU)
 Bus Interface Unit (BIU)

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