Internet aaj ka maqbool tareen media hai. Information technology ki aslaah aaj children’s ki zubaan par hai. Huraf ‘E’ iss key liye makhsus hogaya hai. E-mail, E-commerce, E- banking, internet shoping jaisey kaam shoro hochukey hain. Internet sey connect honey key liye PC key under aik fax modem card jesey baaz awoqat sirf modem he kaha jata hai nehayat zarori hai. Modem ka kaam A-D ya D-A hota hai yaani ye Analog signal ko digital code aur digital code ko analog signals main tabdil karta hai. Modem ka rabta internet ki dunya sey phone line key zarye hota hai. Ye computer data ko telephone lines key zarye dunya key kisi bhi Country bheja jaskta hai aur data wasool bhi karskta hai. Agar aap internet isstamal karma chahtey hain to aap key liye modem zarori hoga.
Baaz motherboards aesey hain jinn par built-in modem nahi hota inn main alag sey modem lagana parta hai. Modem do tarha key hain. Aik external jo key system unit key under he board par lagaye jatey hain yaani inn ko laganey key lye ISA ya PCI Slit isstamal hoti hain aur dosrey external jinn ko bahir sey system unit key saath mun-sa-lik kya jata hai. Jo amoman serial port par lagtey hain aik modem card yani Internal modem card hota hai.
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