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.
Color TV highlights 1946-1950: RCA Laboratories develops color TV system that later tests well and becomes national standard in late1953. October 1950: Federal Communications Commission approves CBS color TV technology as the national standard but reverses decision in December 1953.