74651043
Mar 24, 1995
controllers and software operating system for such controllers for controlling - audio-video equipment such as video tape recorders, video cassette recorders, cameras, compact disc players and audio cassette players; telephones; RS-232 and RS-422 controllable devices such as data transmission systems, routers, and satellite transmitters and receivers; and devices controlled by electrical signals transmitted over building power lines such a lighting controls, and security systems
Electrical and Scientific Apparatus