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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.

Java内核是unicode的，就连class文件也是，但是很多媒体，包括文件/流的保存方式是使用字节流的。因此Java要对这些字节流经行转化。 char是unicode的，而byte是字节。Java中 byte/char互转的函数在sun.io的包中间有。其中ByteToCharConverter类是中调度，可以用来告诉你，你用的 convertor。其中两个-Java core is unicode, and even the class file as well, but many media, including file/stream preservation approach is to use the byte stream. Therefore Java byte to flow through the lines of these transformed. char is a unicode, while the byte is a byte. Java, byte/char Huzhuan sun.io package of functions in the middle. One ByteToCharConverter class is in the scheduling, can be used to tell you that you are using convertor. Two

几本很不错的电子书 1.SQL语言参考大全(CHM版) 2.设计模式迷你手册（有C++和c#的例子） 3.正则表达式系统教程-Several very good e-book 1.SQL Language Reference Book (CHM version) 2. Design Pattern Mini-Manual (has C++ And c# Example) 3. Regular Expression System Guide

linux kernel的api，对于编写底层代码的人可能比较有帮助-linux kernel" s api, for the people who write the underlying code may be more helpful to

面向.net的全新工具 《C#完全手册》-Oriented. Net new tools

vc使用过程中遇到问题了吗，看看这里有没有你需要的答案。-vc use process encountered a problem yet to see here is not the answer you need.

com原理与应用例子-com Theory and Application examples

深入了解MFC中的文挡视结构.rar-MFC-depth understanding of the text block as the structure. Rar

学习j2ee设计模式的好书-learning design patterns creates books

mp3编码原理,介绍并分析mp3编码以及解码原理.包括大量图示和例子-mp3 coding theory, presents and analyzes mp3 encoding and decoding principle. Picture shows including a large number of examples and