Embedded Multiple Communication Mode Eos Terminal

Now many domestic logistic centers almost call to their clients to manage small amount and frequent operations such as tobacco and alcohol. This way wastes time and its efficiency is low. Furthermore the present EOS (Electronic Ordering System) only pays attention to the system based on computer network and ignores the information exchange with most tradesmen and small-scale clients.The workflow platform and technologies of data communication are introduced aiming to solving this problem. And embedded system, that is, ARM is applied. Using these technologies the EOS adapting to our home conditions is researched. The whole system is composed of client terminal and server terminal. The main use of client terminal is to help clients to order goods conveniently. And the server terminal deals with such operations as ordering goods and updating information and so on.The functions and composition are studied in this paper. The client terminal founded on ARM microprocessor is put forward and designed to use in electronic order. The terminal employs the ARM chip—LPC2210 produced by PHILIPS Corporation as the hardware core. The integrated development environment is ADS1.2 supplied by ARM Corporation.The client terminal is made up of keyboard, LCD (Liquid Display Device) and various communication interfaces. On this terminal such operations as ordering, querying and updating information and so on can be performed. There are two primary ways to transmit information. One is through PSTN (Public Switched Telephone Network) connecting with Modem by serial interfaces. The other is through GPRS network connecting with wireless module by serial interface.The client terminal makes full use of the features of ARM for example its high performance, low power consumption and low cost. It also fully utilizes...