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What is a demultiplexer?
Ans:
Demultiplexer: This is a logic circuit which accepts one data input and distributes this over some outputs. This has one data input, m select lines, and n output lines, while a decoder does not contain the data input although the select lines are utilized as input lines.
Which is not a valid page replacement policy? Ans. RU policy (Recurrently used) is not a valid page replacement policy.
Write 8086 initialisation routine required to program 8255 for mode 1 with Port A and Port B as output Ports and Port C as an input port. Indicate all the relevant signals.
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Packet switching is used for (A) Credit card verification (B) Automated Teller Machine (C) The internet and the World Wide Web (D) All of the above Ans
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