I’m confused, I used to think that modem are an old thing now and nobody uses them as modems have a SIM installed in them for internet connection through ISP and it’s like a pen-drive which is insertable to a any PC like normal Pen-drives.
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* The term modem is short for **modulator/de-modulator.**
* It takes data and converts it to be sent along a certain kind of connection, then *another* modem on the other end converts it back.
* The first modems most people were familiar with were dial-up modems that our computers would use to send data over a regular telephone line.
* Then came DSL modems which also used phone lines but did it in a much faster way.
* Also cable modems which use the cable wiring from the cable TV company.
* That’s what most people still use today for home internet.
* Finally we have cell-modems which use the wireless cellphone network to send and receive data.
* A **router**, on the other hand, is a device that allows many devices to share one connection.
* The router is the thing that lets you use a smart TV, a cell phone (via wifi) and your laptop all at the same time over the same connection to your internet provider.
* So at home most users have both a modem *and* a router and as others have said, often they are combined into a single box that you rent from your internet provider.
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