Your computers data signal is in digital form and is made up of 0 and 1 - or 'on' and 'off' if you like. The modem, which is the device between your computer and your phone line, converts this digital signal into an analogue signal, and back again on its return, so that it can travel along the phone line.
(1) A nominally discontinuous electrical signal that changes from one state to another in discreet steps. (2) A signal that is time-wise discontinuous (i.e., discreet) and can assume a limited set of values. Antonym: analog.
A digital signal is strung together in infinite variations at rapid speeds to transmit computer information. Most projectors utilize analog signals today whether it be from component, composite or RGB cables.
An electrical signal that is comprised of a stream of digits utilizing only two voltage levels representing either "ON (1)" or "OFF (0)". Whereas analog signals are dependant on the amount of voltage at any given time, digital signals are defined by only the presence or absence of voltage.
A way of sending voice, video, or data that reconstructs the signals using binary codes (1s and 0s) for transmission through wire, fiber optic cable, videoconference, or over air techniques. Digital audio/video signals represented by discrete variations (in voltage, frequency, amplitude, location, etc.) can be transmitted faster and more accurately than analog signals.
A digital signal (electrical or otherwise) is a signal in which information may be carried in a limited (two or more) number of different discrete states. Probably the most fundamental and actually widely used form of digital signal is binary. This is where one amplitude condition represents a binary.
Unlike its analog counterpart, a digital signal is not a continuously variable and varying signal. It only assumes a finite number of discrete values, and bits, in 1s and 0s, represent digital information.
A signal whose units are represented by either one of only two states: on or off, yes or no, 1 or 0. Since no gradations in between are permitted, digital signals are precise, unambiguous, and quite immune to noise. See also analog.
Signal that takes on only two values, off or on, typically represented by “0” or “1.” Digital signals require less power but (typically) more bandwidth than analog, and copies of digital signals can be made exactly like the original.
A signal in which information is carried in a limited number of different discrete states. The most fundamental and widely used form of digital signals are binary signals, in which one amplitude condition represents a binary digit 1, and another amplitude condition represents a binary digit 0. Digital-to-analog converter - See D/A converter.
A signal that has a limited number of discrete states prior to transmission. This may be contrasted with an analog signal which varies in a continuous manner and may be said to have an infinite number of states.