Communication Media & Devices

Wireless network: A wireless does not use cables. It uses infrared or microwave radio signals to transmit and receive data. Wireless network are used where cables are inconvenient, for eg. If the network is created among building separated by streets. They are usually more expensive than cable-linked network. Cellular network: Some cellular phones are use […]

Words And Thier Meaning

Light pen– is an input device which like the mouse, is used to choose objects on a display screen. Digital Camera-it allows you to take pictures and to store digital photographic images.  A PC Camera- is a digital camera that is attached to the computer. It gets its power from the computer. A PC camera […]