Thursday, October 27, 2011

Week Eight: Networks

This past week we were talking about networks and protocols. For my product both would be very essential. Networks would be used as they are in any other computer but for the printer part it would be a little bit harder. Printers use many protocols, similar to computers, and that includes Line Printer Daemon protocol/Line Printer Remote protocol (LPD, LPR) or Common Unix Printing System (CUPS), and Internet Printing Protocol (IPP). 
            LPD is used for a remote printer, which is the network it used for submitting print jobs. It had originated from a UNIX operating system. Then CUPS is used more and is more modern and that uses a Linux operating system. CUPS supports both of LPD protocol and the IPP. These protocols is how the printer would communicate with the computer to send requests and receive responses.  Printers could also use ASCII code like computers.
Connections are done by using a printer port or a COM port (hardware cables). Another way to print it to have the computer running the network operating system, using fileserver. Printer server software sends the print job down the cable but the printer must be close to the fileserver to print. I think for my product this is what would be used because this is more popular in smaller networks which is what the two in one computer printer would be. 

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