sine wave pwm inverter schematic

spartan3的一个开发板的原理图，国内一个公司制作的，值得看一下-spartan3 of a development board schematics, a domestic production company, is worth a look at

SPI RTC MAX6902实时时钟的驱动和应用笔记，及其驱动代码，网上很少关于SPI 的，大家参考一下，一定要8个字节一起写。-SPI RTC MAX6902 RTC driver and application notes, and the driver code, on-line small on the SPI, we refer to, we must write 8 bytes together.

温室采集以单片机AN2131作为核心控制器件-AN2131 greenhouse collection to single-chip microcomputer as the core control device

这是一篇硕士研究生论文，主要探讨了用于IC热量表的设计，内容较好。可供参考。-This is a postgraduate thesis focused on the Heat Meter for IC design, as well. For reference.

Active component schematic library for altium

2nd good for the bigginer of oracle or sql

基于WEB的数据分析系统的设计与实现――系统分析及设计报告-WEB-based Data Analysis System Design and Implementation- Systems Analysis and Design Report

IC卡电子锁,单片机开发，电子锁，嵌入式-IC card electronic lock, microcontroller development, electronic lock, embedded

简单的二叉搜索树，但有一个问题：它不是一个平衡树。本章将介绍一种平衡的AVL搜索树，讨论其信息结构、功能以及使用它的设计程序。

某220KV区域性变电所一次系统设计。主变为2×120MVA，电压比为220/121/10.5KV，容量比为100/100/50，本期工程一次建成，设计中留有扩建的余地。-220KV substation of a regional one system design. Main becomes 2 × 120MVA, voltage ratio 220/121/10.5KV, the capacity ratio of 100/100/50, the current project once completed, the design leaves room for expansion.