Installation of computer networking hardware; Maintenance and repair of computer networking hardware

ELECTRIC PHOTOTYPESETTERS AND CALCULATORS

COMPUTER PROGRAMS PRERECORDED ON MAGNETIC TAPES OR MAGNETIC PLATES FOR USE IN MAINFRAMES, WORK STATIONS, MINI COMPUTERS AND COMPUTERS OTHER THAN PERSONAL COMPUTERS, AND INSTRUCTIONAL MANUALS SOLD THEREWITH FOR USE IN THE FIELDS OF BUSINESS, GOVERNMENT, EDUCATION AND SCIENCE