Computer science modem

 Modem:-modem is stands for modulation and demodulation.It converts the digital signals into analouge data signals.It can be installed within computer development slot applicable for it.  




Frequently types of modem :- Frequently there are two types of modem which follows as 

(i)Standard modem

(ii)window modem

Standard modem:-  standard modem is used generic device drivers  . Standard modem has of two types internal and external. Internal modem do not need much standard structure.But external modem is connected through one of the Com port to the computer through a cable and this cable is called null cable.



Window modem:- window modem is a secret plug or plays tool. It requires a perticular device driver. 


Generally types of modem:- 

(i)Optical modem

(ii) Digital modem

(iii) Acoustic modem

(iv)Smart modem

(v) Short haul modem 

Optical modem :-  optical modem uses optical cables instead of other metalic media.It converts digital data signals into pulse of light  transmitted on the optical fibre used by it.

Digital modem:-  digital modem converts digital data into digital signals. It modulate the digital data on digital carrier signals for transmition on digital transmission lines.




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