Data processing apparatus in the nature of external device for processing, sorting, calculating, analyzing of data and information; optical communication device, namely, device for transmitting, receiving, decoding and amplification; network communication device, namely, computers; electronic monitors for audio and video equipment for monitoring electric current and electrical signals; surveying instruments; optical communication apparatus and instruments, namely, cable television transmitters, communication link testers for testing communication links, digital transmitters, optical receivers, optical transceivers, optical transmitters; fiber optic cables; integrated circuits; integrated circuits sensor; burglar alarms