这是一个简单的C程序，使用AVR单片机Atmega8515范围

数控直流稳压电源源程序 本设计由两个电路模块构成：直流稳压源电路（+15V,+5V,-15V），程控电路。并且巧妙得反置使用D/A变换器。使程控输出电压0-9.9手动可调，步距为0.2V。并可预置电压值，采用LED同步显示。-NC DC power source circuit of the design of two modules: the source DC circuit (+15 V,+5 V,-15V), program-controlled circuit. And clever use of a reversal of D/A converter. So that the output voltage programmed manually adjustable 0-9.9, step to 0.2V. And preset voltage value, shows that the use of LED synchronization.

LDPC编码研究及其在OFDM系统中的应用 LDPC 在OFDM 中的应用分析-LDPC coded OFDM system in the research and its application in LDPC Application Analysis of OFDM

并口的接口规范，对开发并口驱动的同行很有用。-Parallel Port Interface Specification, on the development of parallel drive counterparts useful.

学生选课系统 关键词 选课 学生 数据库 查询-Student Course Selection System Keywords elective student database query

心率指心脏每分钟搏动的次数, 它能够反映心脏的工作状态。正常心率决定于窦房结的节律性, 成人静息时约60～100 次/ min , 平均约75次/ min。心率可因年龄、性别及其他因素而变化。初生儿心率约130 次/ min , 随年龄增长而逐渐减慢, 至青春期乃接近成人的心率。女性心率比男性稍快 运动员心率较慢。成人安静心率超过120 次/ min 者, 为心动过速 低于40 次/ min 者为心动过缓。心率受植物性神经和体液因素调节。-Heart rate means the number of pulse per minute, it can reflect the work of the state of the heart. Normal heart rate determined by the rhythm of the sinoatrial node, resting adult is about 60 ~ 100 times/min, an average of about 75 times/min. Heart rate may be due to age, gender and other factors change. Heart rate of newborn infants of about 130/min, growth has gradually slowed down with age, to adolescence adult heart rate is near. Women slightly faster rate than men athletes slow heart rate. Quiet adult heart rate over 120 times/min, and for the tachycardia less than 40 times/min for bradycardia. Heart rate by the plant regulate neural and humoral factors.

基于UML的数字书籍管理系统的分析与建模 供大家参考-UML-based management system for digital books, Analysis and Modeling

上海杰得MCU Z228 Application Processor-On Haijie a MCU Z228 Application Processor

基于P2P的可靠直播视频服务模型的建立和分析-P2P reliable broadcast video services model and analysis

介绍了MVB总线帧结构，并完成了用于网络连接的MVB总线访问IP核的设计。-introduced the MVB bus frame structure, and completed the network connection for the MVB bus visit IP core design.

USB Joystick Source code.