skaitmeninėje elektronikoje "Transistor-Transistor Logic" čia ko gero kalbama apie TTL signalų lygius t.y. 0...5 V. fotografijoje "(T)hrough (T)he (L)ens light metering" "Giee" <?@?.?> wrote in message news:hc4b6d$3nk$1@trimpas.omnitel.net... > http://cgi.ebay.com/2pcs-Constant-current-laser-diode-driver-80-500mA-w-TTL_W0QQitemZ170347759942QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item27a9848946 > >