King Cellular is one of the companies in the region engaged in Purwokerto selling and services . However , transaction processing and data summary still use the recording in the buku.Tujuan of this research is to make the sale and purchase of information systems at King Cellular Purwokerto . The data obtained through interviews and observation . Information systems development methods will use the prototype method . With the availability of information systems Sales and Purchasing , KING Cellular Navan can be easier to manage transactions , and obtain information more quickly and accurately , and reduce the risk of data loss .
Keyword : Information Systems , Sales and Purchasing , prototype