9 COMPUTER HARDWARE AND PERIPHERAL EQUIPMENT FOR CREATING, EDITING, TRANSMITTING, DUPLICATING, STORING, AND VERIFYING DATA ON MEDIA USED IN NUMERICALLY CONTROLLED MACHINE TOOLS-NAMELY, MICRO-COMPUTER CENTRAL PROCESSOR UNITS, CORE STORAGE UNITS, PERFORATED TAPE READERS, TAPE PERFORATORS, PUNCHED CARD READERS, INPUT KEYBOARDS, IMPACT PRINTERS, FLEXIBLE DISKETTE DRIVE AND CONNROLLERS, AND TELEPHONE LINE INTERFACES