How Many Different Modems Are There?

Modem is short form for “demodulator/modulator”. A modem allows a computer to send or receive data through a connection. It works by changing the regular analog signal to a digital signal to be used by computers. Different types of modems exist such as dial-up, cable, DSL, and wireless.

Standard Dial-up – These modems have the slowest transfer speed (downloads) of all modems. Dial-up modems are capable of speeds of up to 56 kilobits per second through an Internet Service Provider connection. Dial-up modems use phone lines to connect with the Internet.

DSL (Digital Subscriber Line) – DSL is also provided through regular copper lines though it is not available to everyone, since you have to be close to a telephone switching office (usually within about 4 miles). DSL speeds can differ depending on the quality of the connection. Still, download speeds typically will be about 1000 kilobits per second on a good connection.

Cable Modem – A cable modem runs over cable television lines. The coaxial cable it uses gives you much more bandwidth than dial-up and therefore gives you extremely fast access to the World Wide Web. These modems can give you a transmission rate of about 2000 kilobits per second which is about 40 times faster than the top speed of dial-up! However, speeds may vary depending on the location or other concerns.

Wireless Broadband Internet – Wireless Internet (Wi-fi) connects using radio frequency signals, rather than phone lines or cable television lines. Also, you can connect to the internet within a limited range, which means an equipped laptop can connect to the internet away from home easily when a “Hotspot” is available. Wireless Internet is popular in PDAs, cellular phones, and other portable devices including laptops and notebooks. Download speeds of Wireless Internet can sometimes reach about 1.5 megabits (almost 2 million kilobits), much faster than other connections.

Alison Currey
Being a Literature Students she loves to write and always kept working for the society and who really need a hand. Apart from writing she is an excellent singer herself. Have found her either reading or drawing in her free time. An inspiring personality you may want to follow at FredForum here.

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