这是我从网看到的，不用电平的转换IC就可以把串口TTL输入、输出的电平转换成计算机能识别的电平，原图经测试不能用，经我改进后效果很好，大家不妨一试...

K150. USB PIC PROGRAMMER

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介绍一种采用半桥电路的开关电源，其输入电压为交流220V±20％，输出电压为直流4～16V，最大电流40A，工作频率50kHz。重点介绍了该电源的设计思想，工作原理及特点。-Introduction of a half-bridge circuit using the switching power supply, the input voltage for AC 220V ± 20, output voltage of DC 4 ~ 16V, maximum current 40A, operating frequency of 50kHz. Focuses on the design of the power of thought, working principle and characteristics.

快捷实现数据复制和磁盘运行,window linux-Realize fast data replication and disk run, window linux

用4BIT OTP单片机实现USB/PS2 MOUSE的设计 USB 低速设备的设计发展到现在已经有了相当的成熟度。 各家IC公司都推出了USB DEVICE端的解决方案, 一般以8 BIT CPU CORE + USB SIE为主流构架。 SH69P04是中颖电子(Sinowealth)本着丰富USB产品应用,降低USB IC成本而设计的4BIT OTP单片机, 用以开发USB DEVICE设备。-the design of usb or PS2 mouse

Camera interfacing for Robotics

中国电信客户关系管理系统设计方案 其中包括客户机会管理、产品管理-China Telecom customer relationship management system design, including the opportunity to manage customer, product management

一个主从mysql热备份的设计方案.内有实现脚本,挺实用的.-A master-slave mysql hot backup design. There is the realization of the script, very useful.

文中给出了在数字系统设计时常用的器件,和它们的参数希望对大家有所帮助-The paper gives the design of digital systems in the commonly used devices, and their parameters would like to help everyone

SM5004,完全可以取代mcx314的一款FPAG芯片！-SM5004, is entirely possible to replace a MCX314 of FPAG chips!