Getting Down To Basics with Codes

Data Communication Basics Communicating means sharing information, it may be remote or local. The definition of telecommunication means communicating at a distance. Data Communication is the exchange of information between devices via some type of transmission medium like a wire cable. The potency of Data Communication system depends on three characteristics that are Fundamental:. Delivery: When the message sent by the source System is correctly delivering to the correct destination, this is called Delivery. Accuracy: The system ought to deliver the message correctly on the destination System, should any information transmitting to one system to another gets altered or changed and the same uncorrected bits are received on the destination system effects in no use to read the message.
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Timeliness: The message must deliver the information in a timely manner. Data transmitted and delivered late to the address systems are worthless.
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Data Communication deals with the five network elements mentioned below: Message: The message is the data or the info to be transmitted or communicated form source system to the destination system. This message may be in graphic form, audio type, text form or a combination of these. Sender: The sender is the source system or device which sends the message. It could be a computer, phone, work station etc. Receiver: The receiver is the destination system or device which gets the message from sender device or source system. It might be a computer, workstation, or phone among other things. Medium: A transmission medium is a physical path through which a message travels from sender device to the receiver device or from the source to destination system. Protocol: A protocol is set of regulations and rules that regulate the data communication. It symbolizes a link establishment between the source systems and also the destination system that’ll convey. The connection between the sender and receiver devices or source and destination source might not be established without this protocol. In communicating, presentation of information might be in graphics, text, video, and images audio. The text is represented as bit patterns, a sequence of bits. Distinct sets of bits patterns have been designed to represent by text symbols known as code. These data portrayal follow few standards: ASCII: The American-National-Standards-Institute (ANSI) developed a code called American-Standard-Code-for-Information-Interchange (ASCII). This code uses 7 bits for each symbol to represent it. Extended ASCII: This is much like the ASCII but chooses 1bit more than ASCII code to make size of every pattern 1 byte (8 bits). This Extended ASCII adds zero to the left of the 7 bits to form a pattern of 1 byte like for example 01111111. UNICODE: This Unicode was designed to comprehend different languages since in the past codes that were developed understood just English. A coalition of hardware and software development is called Unicode. This is 16 bits and will represent up to 65536 symbols. ISO: This is International Organization for Standardization, they designed a code a pattern of 32 bits. Numbers & Images also use bit patterns, an image is divided into matrix of pixels.