This article explains how to set volume in iOS 7 and iOS 8 for music, ringer (iPhone only), alarm, and Siri on iPhone, iPad (Mini), and iPod Touch. There are three different volume settings on iOS devices which can make setting the correct volume a little tricky.
Standard-definition television can only display 480 lines. The Panasonic television followed NHK's standards -- an analog signal that packed more information than traditional television signals. By the 1980s, NHK had developed the technology to the point that it was time to shop around for other customers.
The set top box from your cable company can also convert the digital signal to analog (for TVs that only have component/composite/coaxial connections), but it also decrypts any encrypted channel you subscribe to. If you subscribe to more than just basic cable, you need a set top box from the cable company.WC is now requiring that every TV in my home has a digital adapter or a set-top box, if I want to watch certain channels like CNBC. Their pitch is that they're converting certain channels from analog to digital.