Large Scale Integration for Display Screens

Solid state devices and circuits have now achieved a dominant position in most areas of electronics in which vacuum tubes formerly held sway. They have also opened up new areas of electronic applications ( e.g. computers, calculators) not accessible to the vacuum tube. In this triumphant march of solid state technology there is, however, one vacuum tube fortress that has held off all challengers, and seems as impregnable as ever --the TV tube!