Communication device

සන්නිවේදන උපකරණයක් යනු ඇනලොග් හෝ ඩිජිටල් සංඥා සම්පේෂණය කිරීෙම් හැකියාව ඇති එයට අදාල සම්පේෂණ මාද්‍ය සකසා දිය හැකි උපකරණ වේ.
වෙනත් වචනවලින් කිවහොත්, එක් තැනක සිට තොරතුරු හෝ දත්ත වෙනත් තැනකට ගෙනයාම සදහා විෙශේෂෙයන් නිර්මාණය කර ඇති උපකරණ හෝ දෘඩාංග කොටස වේ.

සන්නිවේදන උපකරණ සඳහා වන නිදසුන් කිහිපයක්  පහත දක්වා ඇත.

Network interface card (NIC)

The hardware handles all the physical network signals

The NIC allows data to be communicated to and from a networked computer

Wi-fi  cards

When you are using your computer on a wireless network, you need to be able to 
send data to and receive data from the server and other computers on the network.
This may be done by a built-in wi-fi in your laptop or mobile device connected to a local 

network.
If your laptop needs to connect via a mobile wi-fi network, 
then you can also purchase a Wi-Fi 'dongle' that looks like a memory stick and is inserted 

into a USB port. 
It works in just the same way but is designed to work with a specific mobile internet 

network provider

Router

This is a very important network communication device. 
It is responsible   for sending network traffic to its correct destination. 
It works by reading the destination network address within each data packet and sends it 

along its way. 
There can be many routers on a large network..

Modem

A Modem is a device used to convert digital data to analogue data in order to 

transmit it over the telephone network (Modulation).

It will also convert the analogue data back into digital data when the computer is 

receiving data from the telephone network (Demodulation). 
So together the device Modulates and Demodulates.