本文提出了一种基于GPRS网络的无线自助式话费查询打印系统的网络结构设计、嵌入式CPU和GPRSMODEM选择设计、电路结构设计、主程序设计和可靠性设计方案,使产品具备无线高速传输打印、自助式打印操作和密码开启模式等功能。通过用户使用证明,设计方案科学合理,产品运行稳定可靠。 This paper presents a network design based on GPRS network wireless self-service calls query printing system network architecture, embedded CPU and GPRSMODEM selection design, circuit design, the main program design and reliability of the design so that products with high-speed wireless print, Self-service printing operation and password open mode and other functions. Through the use of user certification, scientific and rational design, product operation is stable and reliable.