A communication device is a hardware device capable of transmitting an analog or digital signal over the telephone, other communication wire, or wirelessly. The best example of a communication device is a computer Modem, which is capable of sending and receiving a signal to allow computers to talk to other computers over the telephone. Other examples of communication devices include a network interface card (NIC), Wi-Fi devices, and an access point.
Communication device examples
Below is a full listing of all the different types of communications devices you may encounter when dealing with a computer.
- Bluetooth devices
- Infrared devices
- Modem (over phone line)
- Network card (using Ethernet)
- Wi-Fi devices (using a Wi-Fi router) (examples shown below)
Communication device errors
Any time a communication device encounters problems communicating with another device you may encounter a communication error. Below are a listing of general steps that can be verified when this error is encountered.
- If your communication device is using a wire, make sure it is firmly connected.
- Make sure the proper drivers are installed and that no errors or conflicts are occurring with the driver and that the device is being detected.
- If your communication device requires settings, make sure they're correct. For example, a network card will require the proper IP, DNS, and Subnet settings to establish a connection with the network and be able to find its route to other network devices.
Why do computers need communication devices?
A computer can work fine without a communication device. However, for a computer to communicate with other computers they need a communication device. For example, for your computer to connect to the Internet to view this web page it needed a communication device. Without a communication device you'd have to use a sneaker net to transfer or share data between computers.