21 ELECTRONIC TERMINAL SYSTEMS, ELECTRONIC PROGRAMMABLE COMMUNICATIONS PROCESSORS, ELECTRONIC DATA DISPLAY SYSTEMS, ELECTRONIC MODULAR INDICATORS, ELECTRONIC KEYBOARD SYSTEMS, INDICATORS AND READOUTS FOR INTEGRATED CIRCUITS, DIGITAL AND DECIMAL READOUT DEVICES, INDICATOR LAMPS, PILOT LIGHTS, DIAL LIGHTS, TRANSISTORIZED AND NONTRANSISTORIZED INDICATORS, AND OTHER ELECTRICAL DISPLAY PANEL COMPONENTS