Communication devices are what some disabled people use to communicate, if they can't talk. There are ones that actually talk, like the one used by the scientist Stephen Hawking, who has ALS. There are of course simpler ones, that only speak a word or a sentence, when the person touches a button or uses a motion of the head to indicate which one they want to say.
Cellphones are also a communication device, of course. Any device used to communicate can be called a communication device.
Here is a more IT based answer: A communication device is a physical part that enables one computer to communicate with another.
A hardware component that enables a computer to send and receive data, instructions and information and from one or more computers.
modem
hardware
widely used communications device is a
It is true that in data communications the sending device is usually a computer. The main components are transmitter, receiver & antenna and every communication device must have all these three components
I believe it is interrupt request line.
Wireless Communications Device Law
the radio
telephone
"PCI communications device" is displayed in the Device Manager when Windows does not have a driver for a PCI device that is used for networking in some fashion. It could be a dial-up modem, Ethernet controller, or a wireless card. You will need to download drivers from your computer manufacturer to display a more specific name in the Device Manager and make the yellow question mark go away.
refers to a program or device's ability to link with other programs and devices
Bluesnarfing
device driver