buildings and structuresLists of countries · Lists by country · List of international rankingsvteවිදුලි සන්දේශනHistoryBeaconBroadcastingCable protection systemCable TVCommunications satelliteComputer networkData compressionaudioDCTimagevideoDigital mediaInternet videoonline video platformsocial mediastreamingDrumsEdholm's lawElectrical telegraphFaxHeliographsHydraulic telegraphInformation AgeInformation revolutionInternetMass mediaMobile phoneSmartphoneOptical telecommunicationOptical telegraphyPagerPhotophonePrepaid mobile phoneRadioRadiotelephoneSatellite communicationsSemaphoreSemiconductordeviceMOSFETtransistorSmoke signalsTelecommunications historyTelautographTelegraphyTeleprinter (teletype)TelephoneThe Telephone CasesTelevisiondigitalstreamingUndersea telegraph lineVideotelephonyWhistled languageWireless revolutionPioneersNasir AhmedEdwin Howard ArmstrongMohamed M. AtallaJohn Logie BairdPaul BaranJohn BardeenAlexand