Related Literature of Pos

1016 WordsAug 3, 20095 Pages
*Review of Related *Literature Foreign Over the years, more enhancements were made to the cash registers until the early 1970s, when the first computer-driven cash registers were introduced. The first computer-driven cash registers were basically a mainframe computer packaged as a store controller that could control certain registers. These point of sale systems were the first to commercially utilize client-server technology, peer-to-peer communications, Local Area Network (LAN) backups, and remote initialization. In the late 1980s, retail software based on PC technology began to make its way into mainstream retail businesses. Today, retail point of sale systems are light years ahead of where they began. Today's POS systems…show more content…
With tens or hundreds of client PCs, a file server is the only way to manage the often complex and simultaneous operations that large networks require. (*http://freepctech.com/pc/002/networks007.shtml*, July 28, 2009) Client-server describes the relationship between two computer programs in which one program, the client program, makes a service request to another, the server program. Standard networked functions such as email exchange, web access and database access, are based on the client-server model. For example, a web browser is a client program at the user computer that may access information at any web server in the world. To check your bank account from your computer, a web browser client program in your computer forwards your request to a web server program at the bank. That program may in turn forward the request to its own database client program that sends a request to a database server at another bank computer to retrieve your account balance. The balance is returned to the bank database client, which in turn serves it back to the web browser client in your personal computer, which displays the information for you. Advantages In most cases, client-server architecture enables the roles and responsibilities of a computing system to be distributed among several independent computers that are known to each other only through a network. This creates an additional advantage to this architecture:

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