232和485的接口转换介绍

This application report discusses the design of non-invasive optical plethysmography also called as pulsoximeter using the MSP430FG437 Microcontroller (MCU). The pulsoximeter consists of a peripheral probe combined with the MCU displaying the oxygen saturation and pulse rate on a LCD glass. The same sensor is used for both heart-rate detection and pulsoximetering in this application. The probe is placed on a peripheral point of the body such as a finger tip, ear lobe or the nose. The probe includes two light emitting diodes (LEDs), one in the visible red spectrum (660nm) and the other in the infrared spectrum (940nm). The percentage of oxygen in the body is worked by measuring the intensity from each frequency of light after it transmits through the body and then calculating the ratio between these two intensities.

jdk 1.6.0 api的帮助资料，包含了许多jdk的一些函数和列子，类的详细介绍-jdk 1.6.0 api with the help of information, including a number of jdk some of the functions and Lieh-tzu, the class A detailed description of

一本很好的管理电子书-a well managed e-books

用数组来解决关于国际象棋马踏棋盘问题 已经调试无错误-Using an array to resolve on the chess board has been riding horses debug error-free

C++ Builder 入门。让你快速学会C++ Builder编程的一些基本知识。麻烦管理员帮我开通下载功能，我急需要本网站上的labwindows/CVI方面的数据库教程，谢谢！-C++ Builder entry. Lets you quickly learn to C++ Builder some basic knowledge of programming. Trouble administrator download function to help me open, I hasten to this site labwindows/CVI database tutorial, thank you!

用VC制作带弹出式菜单的按钮 带有弹出式菜单的按钮可以使一个按钮具有多项选择功能，扩展了按钮的功能，相当于把多个按钮集成于一体，可以减少按钮数目。 -VC produced by the button with a pop-up menu button with a pop-up menu can make a button with a multiple-choice functions, extended functions of the button, which is equivalent to integration of multiple buttons in one can reduce the number of buttons.

c语言高级编程技术 学习C语言的一本好书！-c high-level programming language technology to learn C language a good book!

最佳匹配・可视化c++实现-matching the best visual realization c

包含各类数据结构问题的常用算法，非常有用，但用一些问题-Types of data structure that contains the common algorithm, is very useful, but with some problems

To explain how to use CVS.