solid state electronics-namely, solid state drivers of electronic displays and solid state controllers of electronic visual displays; data modems-namely, solid state electronic modems to transfer information between remote computers via data lines; electronic visual displays-namely, lamp bank or lamp emitting diode matrices, whereupon written or graphic messages are presented for a viewing audience; exterior and interior displays-namely, lamp or light emitting diode matrices which are used for presentation of changeable written or graphic messages, suitable for interior or exterior applications; time and temperature displays-namely, lamp bank or light emitting diode matrices programmed to display information regarding time and temperature; airport electronic information displays-namely, changeable, electronic visual display systems whereupon information regarding flight departures, arrivals etc, are presented and updated; electronic information systems, comprising an electric lamp or light emitting diode display matrix, a series of electronic drivers to systematically switch the display bulbs on or off, and an electronic controller into which information can be entered for display; electronic scoreboards whereupon scoring information is presented with lamp or light emitting diode matrices; electronic visual displays for horserace tracks-namely, changeable, electronic visual display systems, whereupon information regarding periodic updates of pari-mutual betting status, race outcomes and advertising messages are presented