[data and common software modules; voice mail systems comprising a message server and computer; telephones; equipment for automatically answering telephones in the absence of human intervention and to receive, record, and play back messages so received and/or to transmit messages over the telephone, namely, an automatic answering telephone set and recorded answering message sender; radio paging systems comprising a handset, base station, repeater, portable mobile radio station, switching controller, bidirectional booster, speakers; wire paging systems comprising a handset, pager, power source, and speakers; oscilloscopes and] parts* for oscilloscipes: * [therefor; memory scopes and parts therefor;] curve tracer apparatus for measuring the characteristics of a semiconductor device and parts therefor; digital meters for making digital measures of current voltage, resistance, temperature, frequency, decibel, capacitance, conductance, and duty ratio, and to conduct a diode check and continuity test, and parts therefor; [logic analyzers and parts therefor; photocopying machines and parts therefor]