Modem (Modem) MOdulator/DEModulator from (using the word in front of the two words combined) by splitting work into Modulation is a device that converts signals. The modem converts the signal, which is divided into the northern and southern sectors, which are sent to a computer set (Digital) telephony signals (Analog) (Digital), so in order to connect to a network such as the Internet under phase it is necessary to use the modem with the modem itself is internally (Internal Modem) that looks into the card, External modem (External Modem) that looks into a separate box, and a PCMCIA modem to be used with notebook computers, in addition, it is also the network operating systems (Network Operating System). As well as managing resources and areas to be shared. Controlled security system on the network.
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