usb 接口芯片介绍PDIUSBD12 是一款性价比很高的USB 器件它通常用作微控制器系统中实现与微控制器进行通信的 高速通用并行接口它还支持本地的DMA...

电气新国标 多下载 0.4KV~40.5KV户内高压开关柜-Electric new multi-GB downloads 0.4KV ~ 40.5KV indoor High-voltage Switch Cabinet

This an online quiz system written in asp with simple ms access db. Good for beginner and access level for programming.-This is an online quiz system written in asp with simple ms access db. Good for beginner and access level for programming.

本程序用VB+SQL 2000实现,可以实现小区的住户资料,仪表资料,住户投宿,住户报修等数据的查询,修改,删除,统计和以报表形式打印输出.-the procedures used to achieve VB SQL 2000 can be achieved neighborhood households, Instrumentation, tenants will be met, household repair and other data query, modify, delete, statistics and statements in the form of printouts.

毕业生信息管理系统-graduates information management system

Fifteen Square Game in C++ code

AMV转换，是很好用的,哈哈，涨价了乱了解情况-AMV conversion, is a good use, and says that the increase understanding of the situation of chaos

MAX7219驱动LED特好使.MAX7219是微处理器和共阴极七段― ― 八位LED显示、图条／柱图显示或64点阵显示接口的小型串行输入／输出芯片。片内包括BCD译码器、多路扫描控制器、．字和位驱动器和8X 8静态RAM。外部只需要一个电阻设置所有LED 显示器字段电流。MAX7219和微处理器只需三根导线连接，每位显示数字有一个地址由微处理器写入。允许使用者选择每位是BCD 译码或不译码。使用者还可选择停机模式、数字亮度控制、从1～8选择扫描位数和对所有LED显示器的测试模式。-LED Driver MAX7219 so special. MAX7219 is a microprocessor and a total cathode seventh-- 8 LED display, map article/column or 64 shows a small dot-matrix display interface serial input/output chips. Chip including the BCD decoder, multiplex scan controller. Word and bit drive and 8X 8 static RAM. External resistor only need one set all LED displays current field. MAX7219 and the microprocessor only three wires to connect, each show has an address by the digital microprocessor write. Is to permit users to choose each BCD decoding or not decoding. Users can also choose to shutdown mode, the digital brightness control, 1 ~ 8 to choose from scanning the median and LED displays for all the test mode.

本文介绍了在自由口通信模式下，用计算机读写S7-200 PLC存储区内相邻的多个字 节数据的通信程序设计方法，程序设计中采用了多种可靠性措施。 -In this paper, in a free port communication mode, using the computer to read and write S7-200 PLC storage area adjacent to a number of bytes of data communication program design methods, procedures designed to use a variety of reliability measures.

这个是桌球的游戏，还没有全部完成，希望多多指教，改进之后的版本-This is a snooker game, has completed the hope that the exhibitions, improved version after

VIPer53设计的开关电源,SCH及PCB,效率56％,很想提高效率,但有点难度.希望大家讨论.-VIPer53 switching power supply design, SCH and PCB, the efficiency of 56 percent, wanted to improve efficiency, but it