Digital information is stored using two discrete values, while analog information is typically stored using nondiscrete signals. Since the advent of digital technology, the term "analog" has been used to refer to nondigital storage and transfer technology.Know More
A common example of analog information is vinyl records. Peaks and valleys on an album represent different sounds, and the player's needle responds when the record spins. Cassette tapes, another form of analog information storage, rely on a magnetized medium, and stronger and weaker magnetic signals represent different sounds.
Digital technology uses two values, often referred to as 1 and 0, to store information. These signals can be stored as magnetized and nonmagnetized regions on a hard drive; they can also be stored as microscopic grooves on CDs. Many media used to store analog information can store digital information as well. Tape backup devices, for example, use technology similar to cassette tapes to store the 1s and 0s used for digital information.
One of the primary advantages of digital technology is that information can be preserved and copied perfectly. Many analog media degrade over time, and quality invariably drops when information is copied. Digital information can also be sent over computer networks and the Internet, which has contributed to the widespread popularity of digital information. In addition, digital information can be compressed, so it takes up less space and transfers faster.Learn more about Television & Video
To get digital TV for free, plug the TV set into a set top box and antenna. This allows the TV to pick up signals from digital transmissions.Full Answer >
A digital television signal can be improved by installing the right receiver, ensuring the antenna is installed correctly, positioning the antenna away from obstructions, choosing the right cables or subscribing to satellite television services. Digital television signals are capable of supporting more TV channels and are generally preferred over analog signals.Full Answer >
The primary advantage of having an indoor digital antenna is not having to pay a monthly cable bill because these antennas allow viewers to watch many network stations from over-the-air broadcasts. Other advantages include having continuous television reception if the cable or satellite provider is offline and having access to networks when conflicts arise with a cable provider.Full Answer >
Receiving digital TV requires no sign up. All full-power TV stations in the United States broadcast digital signals, and low-power TV stations must switch to digital by September 1, 2015. Receipt of these signals requires a digital-ready TV, digital converter box, VCR, DVR or similar device.Full Answer >