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What are concentrators? Explain how it helps in connecting number of subscribers.
In rural areas, subscribers are usually dispersed. This is both unessential and expensive to give a dedicated pair for each subscriber. Three techniques are utilized to gain on the number pairs are as following:
1. Parity lines
2. Concentrators
3. Carrier Systems.
In second technique, a concentrator expander (CE) is utilized near the cluster of users and other one at the exchange end as demonstrated in figure.
FIG - Concentrator-expander connection for dispersed subscribers.
Define interrupt. An interrupt is any exceptional event that causes a CPUU to temporarily transfer control from its present program to another program , an interrupt handler th
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Sample Program In this program we only display: Line Offset Numbers -----------------Source Code-----------------
K map explanation for mod 5 up synchronous counter ?
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