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a8259 可编程中断控制 altera提供 The a8259 is designed to simplify the implementation of the interrupt interface  in 8088 and 8086  based microcomputer systems. The device is known as a programmable interrupt controller.  The a8259 receives and prioritizes up to 8 interrupts,  ...

Modern electronic systems solve so many difficult problems that they often seem like magic. Nonetheless, these systems all have thesame basic limitation: they need a source of electrical power! Most of the time this is a straightforward challenge for the electronicdesigner, because there are many ...

  The high defi nition multimedia interface (HDMI) is fastbecoming the de facto standard for passing digitalaudio and video data in home entertainment systems.This standard includes an I2C type bus called a displaydata channel (DDC) that is used to pass extended digitalinterface data (EDID) ...

USB接口

A collection of interface applications between various microprocessors/ controllers and the LTC1090 family of data acquisition systems. The note is divided into sections specific to each interface.

利用EZ-USB接口芯片AN2131Q实现了基于TMS320C5409的水声信号采集及混沌特性研究系统中的高速数据通信，提出了一种采用FIFO缓存芯片实现AN2131Q与TMS320C5409的连接方法，深入研究了EZ-USB序列接口芯片的固件、设备驱动和用户程序开发过程。关键词：AN2131Q; TMS320C5409; IDT72V02；数据通信ABSTRACT: Using AN2131Q as the ...

　　基本的编辑工具(GENERAL EDITING FACILITIES) 　　对象放置(Object Placement) 　　ISIS支持多种类型的对象，每一类型对象的具体作用和功能将在下一章给出。虽然类型不同，但放置对象的基本步骤都是一样的。 　　放置对象的步骤如下(To place an object:) 　　1.根据对象的类别在工具箱选择相应模式的图标(mo ...

　　1. 简介 　　ISIS中的属性有非常大的用处。一个特定的对象的属性是由一些关键字组成，比如，在ISIS中，我们使用封装的属性与PCB的封装关联。 　　对象，管脚，电路图都有自己的属性，如果你想很把这个功能强大的软件用好你必须很清楚他们之间的联系，这个软件和以前你所用过的画电路的软件有些不同。 　　2. 对 ...

We intend to develop a wifi enabled p2p file sharing system on a linux platform using jxta and java. The purpose is to build a system that can be ported to an embedded device at a later stage and be used for p2p file sharing using the 802.11b standard. 我们旨在Linux平台上使用jxta 和java来开发一个支 ...

重写了微软提供SQLHelper(共用的数据库调用接口） 1把SqlHelper的connectionString做成一个全局量，统一设置数据库连接字符串 2增加了返回特定表名的DataSet的各接口。 可在项目的config文件设置数据库连接字符串 private static string connectionString = System.Configuration.ConfigurationSettings.AppSettings["Conne ...