Modem ~ COMPUTERSEASY

January 24, 2011

Modem

Short for “MODulate/DEModulate”. A digital signal is converted to analog form is known as modulation and analog signal is converted to digital form, is known as demodulation. The modem converts digital signals into analog signals that can be sent along telephone lines. A modem is a device that connects your computer to the Internet that sends and receives computer information over a telephone line or cable. To connect your computer to the Internet, you need a modem. Generally internal modem can handle speeds up to 56 Kbps (kilo bits per second) or 56000 bits per second. Most of the 56kbps modems are used in a dialup connection.

Nowadays there are different types of modems available in the market.

1.    Internal Modem
2.    External Modem
3.    Dial up Modem
4.    Analog Modem
5.    Cable Modem
6.    Fax Modem
7.    USB Modem
8.    Wireless Modem
9.    GPRS Modem
10. DSL (Digital Subscriber Line) Modem
11. ADSL (Asymmetric Digital Subscriber Line) Modem
12. SDSL (Symmetric Digital Subscriber Line) Modem

List of Different Types of Modems with Pictures

Internal Modem