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COMMUNICATION CHANNELS:
A wire pair connecting two telephones is the simplest circuit, allowing communication in both directions. Other channels include coaxial cables, optical fibres, satellites, a light beam, microwaves, and others. Whatever the physical medium over or through which message travels, transmission may take place in a number of different modes. They are :
Simplex Half-duplex and Full-duplex. Simplex In this type of channel, the message travels in only one direction, that is from point A to point B but not back again.
Half-Duplex: Transmission can take place in either direction, but not at the same time. In other words, message can be transmitted either from A to B or by B to A one at a time.
Full-Duplex: In this type of arrangement messages can be transmitted and received over the same channel at the same time. Many librarians and information scientists are familiar with the latter two types because database search terminals must be set to transmit full or half duplex in order to communicate with database vendors' computers.
The threading module offered with Python includes a simple-to-implement locking mechanism that will permit you to synchronize threads. A new lock is formed by calling the Lock() me
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ENTERPRISE RESOURCE PLANNING What has football got to do with it? asks management guru Michael Hammer in his latest best seller Beyond Reengineering. The answer is almos
Device Drivers: Device drivers are shared computer programs that provide an interface between the hardware devices and operating system or other higher level programs.
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Batch Processing When the entire computer system is dedicated to a single job, the system is said to be operating in Batch Processing mode. In this mode each program is run to
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Question: CarRide.com is the web portal to CarRide Ltd; a car rental company that makes full use of technological advances to make sure you enjoy the ride with your rental car.
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