PIC18F4550_USB开发原代码,可以给需要用单片机开发USB通信使用参考-PIC18F4550_USB development of the original code, can require the development of USB communication using single-chip reference
美国TI公司的protel 元器件库,在应用中需要更新,本人收集了最新的版本共30M,为提高上传速度分六次上传。文件名依次为TI_1到TI_6。希望大家设计电路板时少走弯路。由于在上传时找不到分类,所以归结为书籍一类-TI" s U.S. Treasury protel components, need to be updated in the application, I collected a total of up-to-date version of 30M, to improve the upload speed upload six hours. File name followed by TI_1 to TI_6. Hope that the design of circuit board less detours. From when can not find in the classification, it comes down to a class of books
实现交流220V市电的定时开关,可编程修改各参数,特殊情况下可强行开关。主要用于控制自助打印机系统。-AC 220V City realize the timer switch, programmable modify the parameters, special circumstances may be forced switch. Mainly used to control the printer self-help system.