Input And Output Devices
   15 Input Devices   10 Output Devices   Devices Work As Both Input And Output      Modem  Network card  Touch Screen  Headsets  Facsimile (FAX)         Modem  - As we know that analog signals transfer in phone line but computer understands only digital signals, so to convert the analog signals into the digital signal and vice-versa modem is used. Modem is considered as both input and output device.      Network  Card  -  A  Network  card (also known as a  NIC or   network interface  card )  is an electronic device that connects a computer to a computer  network. With the help of NIC data we receive and send data so NIC works as both input and output device.        Touch Screen  –  A touchscreen is a both input and output device and normally layered on the top of an electronic visual displays such as cell phone, laptop. A user can give input or control the information through simple or multi-touch gestures ...