How does data communications work? - cni.co.th

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The purpose of data communications is to transfer information betweentwo or more units. As a rule, it is characters (text or numbers) and/orinstructions (commands) which are transmitted, although it can also bedrawings and simplest level of computer language is binary characterswhereeach character is composed of seven to eight 1 s or 0 s. Most comput-ers operate at this communications is basically a matter of ones and zerosThe computer processes binary characters, made up of onesand of the characters is called a bit. By combining several bits, a bina-ry characterset can be constructed. The most common system, ASCII, contains128 characters, each of which is made up of 7 bits. Each of these characters (orbit patterns) is known as a byte.

15 Transmission speeds The optimum transmission speed is not the same as the fastest possible speed since the risk of transmission errors and interference increases ...

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