A router connects multiple computers together and transmits data to its correct destination on a network.
The device you're looking for is... a file-server.
Router
Yes, "Internet" is a noun. It refers to the global system of interconnected computer networks that use the Internet Protocol suite to communicate.
ISP
The Internet is an electronic communications network, or system, that connects computer systems all over the world.
modem
To connect to the internet you need to first buy an internet connection. You must then plug your internet cable into a modem. Finally you must have connection to the modem from your PC, most computers will automatically connect to the internet if the hardware is in place.
An internet cable (Ethernet).
Cabling
It is the part that connects the engine to the trans and transmits the power. It is between there.
The computer network that connects computers across the globe is called the internet.
modems
supercomputer
wi-fi