2. Scanner  We can use it to convert printed images or docs into a digital format.  After obtaining a digital image we can make some modifications it on the computer.  Now a day is very common to include a scanner a photocopying and a printer on the same machine.

3. Network Card  A network card acts as the interface between a computer and a network cable. The purpose of the network card is to prepare, send and control data on the network. A network card usually has two indicator lights “LEDs”:  The green LED shows that the card is receiving electricity;  The orange (10 Mb/s) or red (100 Mb/s) LED indicates network activity (sending or receiving data).

4. Memory Card  A memory card is a small device that allows the user to store files on it. A user can take a memory card, insert it into a computer, and put files on it– including text documents, pictures, audio files, video files and then remove it and take it to another computer.

5. Sources  http://es.wikipedia.org/wiki/Esc%C3%A1 ner_de_computadora http://es.wikipedia.org/wiki/Esc%C3%A1 ner_de_computadora  http://www.google.com/imgres?imgurl=ht tpos http://www.google.com/imgres?imgurl=ht tpos  http://www.google.com/imgres?imgurl=ht tp://4.bp.blogspot.com http://www.google.com/imgres?imgurl=ht tp://4.bp.blogspot.com  http://en.wikipedia.org/wiki/Network_inte rface_controller http://en.wikipedia.org/wiki/Network_inte rface_controller