A modem is a device that links your home network to the Internet. A router is a box that allows all of your wired and wireless devices to access the Internet connection at the same time while also allowing them to communicate with one another without using the Internet. These are two different but related functions.
ADSL modems were originally designed only to provide Internet access to homes without a landline phone service. They work by connecting directly to one of the wires that carries telephone signals into your house. The digital information from your online account is sent to the modem, which converts it into an analog signal that can be read by your television set or other appliance that is connected to its own modem.
These days, some modems can also be used as standalone devices for people who just want to connect their computer to the Internet via a cable. This option is called "cable modem dongle" and is becoming more common as more people subscribe to broadband services from cable companies instead of relying on old-fashioned telephone lines for their Internet connection.
Routers were initially designed to extend the range of a wireless network beyond what could be achieved with individual wireless nodes. In other words, they allow you to connect computers and other devices that might not be within view of each other but that are still on the same physical network to one another.
A modem is a little appliance that uses connections to connect your devices to the Internet. A modem, unlike a router, does not give Wi-Fi access to your house. A modem is a digital translator that converts an information signal from your cable, fiber, or phone lines into a signal that your computer can understand. It can also convert signals from your computer into the proper form for your connection.
Modems were first used by individuals who wanted to connect their personal computers to the internet but didn't have cable internet service at their homes. Since then, they have become important tools for people who need to communicate via email, download web pages, etc.. Modern modems can provide data rates up to 56 Kbps downstream and 8 Kbps upstream, which allows you to download files quickly while staying online all day long chatting with friends through social media sites like Facebook, Twitter, and Instagram.
In addition to connecting computers to the internet, modems can be used for voice over internet protocol (VOIP) calls, file sharing, remote control of appliances, and many other tasks. There are two types of modems: analog modems and digital modems.
Analog modems translate electrical signals into optical signals and vice versa. They work well for communication over short distances but are obsolete technology.
A router is a Wi-Fi device that is often connected to a modem. It transfers data from the internet to personal devices such as computers, phones, and tablets. Your Local Area Network is made up of these internet-connected gadgets in your house (LAN). A router extends the LAN by allowing other devices to connect to the internet via your wireless connection.
Routers come in many different types and models. Some common types are wired routers, wireless routers, mesh routers, and repeaters. Each type has its advantages and disadvantages, so it's important to know what you need before you buy.
Wired routers connect directly to the cable company network and to their analog phones using two separate networks called "layers". These layers use different frequencies which allow both types of connections to take place at the same time. Wired routers are usually the most secure type of router because there are fewer ways for someone to get into the system if they don't have the password. However, they cannot be used with phone lines unless a power adapter is purchased separately. Also, wired routers are more expensive than their wireless counterparts.
Wireless routers work like their wired counterpart except they do not have a physical connection to a telephone line. Instead, they communicate with other wireless devices using radio waves. This means that anyone within range can access the network. Users must login to the router in order to use the internet.