POS系统后台的设置方案范例，DOC文档。

本文讲述了如何利用UDA１３４１进行音频信号的编解码。-This paper explains how to use UDA1341 Audio signal for the codec.

一份关于usb的详细设计资料，包括方案、c编程以及硬件。-about design of usb

本人在C#下SAFE编程，如何在.net 环境下控制硬件设备通讯，涉及I/O卡、COM通信-I C# Under the SAFE program, how to. Net environmental under the control hardware device communications, involving I/O card, COM communication

中国人民银行信贷登记咨询系统 还包括总行,省行,市行配置图(.VSD) 及测试计划.-People"s Bank credit registration and consulting system also includes the head office, the Provincial Bank, Bank city maps (. VSD), and test the plan.

山西电力勘测设计院业务系统需求文档，较为详细的介绍了设计院oa、工作流程，非常详细-Shanxi Electric Power Survey and Design Institute business system requirements document, a more detailed introduction to the design institute oa, work flow, and very detailed

图书馆管理系统的相应论文文档,有参考价值-library management system corresponding paper documents, a reference value

南海市信息网Web服务器负载平衡的 解决方案南海市信息网Web服务器负载平衡的 解决方案 南海市信息网Web服务器负载平衡的 解决方案-sss

串行通信MCS-51单片机内部有一个全双工的串行通信口，即串行接收和发送缓冲器（SBUF），这两个在物理上独立的接收发送器，既可以接收数据也可以发送数据。但接收缓冲器只能读出不能写入，而发送缓冲器则只能写入不能读出，它们的地址为99H。这个通信口既可以用于网络通信，亦可实现串行异步通信，还可以构成同步移位寄存器使用。-MCS-51 microcontroller serial communication within the a full-duplex serial communication port, that is, the serial receive and send buffer (SBUF), these two physically separate receiver transmitter, both can receive data can be sent data. Only read by the receiving buffer can not write, but can only write to send the buffer is not allowed to deliver, their address is 99H. The communication port can be used for both network communications, can also achieve the serial asynchronous communication, but also constitute a synchronous shift register to use.

一篇关于SoC低功耗设计的文档，SoC低功耗设计技术发展综述-An article on low-power SoC design documents, SoC Low-Power Design Technology Development

another 8051 core porocesssor vhdl source code