The Application of Digital Electronics in Networking Communication

Digital electronics is electronics that transfer of receive digital signals. The signals handled by digital electronics are discrete bands of analog levels -- not the continuous ranges. Levels within a band of values represent the same value in digital electronics system. In many cases, the number of these states is two, or binary code which means states are separated by two kinds of voltage bands: one near a reference value (also is called ground or zero volts), and the other a value which locates near the supply voltage. The "false" ("0") and "true" ("1") values of the Boolean domain is used to indicate the two states usually.