Hardware Design of Electronic Ordering System based on ARM Processor

The system employs the ARM chip -LPC2210 as the hardware core. 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.