Tamil thalaivas

Edit Watch this page Read in another language Online public access catalog Page issues An   online public access catalog   (often abbreviated as   OPAC   or simply   library catalog ) is an   online database   of materials held by a   library   or group of libraries. Users search a library catalog principally to locate books and other material available at a library. In simple language it is an electronic version of the   card catalog . OPAC is the gateway to library's collection. History Edit Early online catalogs Edit Screenshot of a   Dynix   menu. First introduced in 1983, Dynix was one of the first and most popular commercial library automation systems ever released, enjoying nearly twenty years of dominance in libraries worldwide. Although a handful of experimental systems existed as early as the 1960s, the first large-scale online catalogs were developed at   Ohio State University   in 1975 and the   Dallas Public Library   in 1978. [1] The

Edit Watch this page Read in another language Subscriber identity module Page issues A typical SIM card (mini-SIM) A mini-SIM card next to its electrical contacts in a   Nokia 6233 A   TracFone Wireless   SIM card has no distinctive carrier markings and is only marked as a "SIM CARD". A   subscriber identity module   or   subscriber identification module   ( SIM ) is an   integrated circuit   that is intended to   securely   store the international mobile subscriber identity   (IMSI) number and its related   key , which are used to identify and authenticate subscribers on mobile telephony   devices (such as   mobile phones   and   computers ). It is also possible to store contact information on many SIM cards. SIM cards are always used on   GSM   phones; for   CDMA   phones, they are only needed for newer   LTE -capable handsets. SIM cards can also be used in   satellite phones , computers, or cameras. The SIM circuit is part of the function