keil c程序 功能：利用USB和上位机通信，传送单片机采集的数据给PC ,keil c program features: the use of USB and PC communications, transmission of data collected by single-chip to PC

常用pcb库文件，方便进行电路开发，protel99格式的,Pcb library file used to facilitate the development circuit, protel99 format

SL811 usb host 读写U盘或移动硬盘的数据。含文件系统。fat32格式-SL811 usb host to read and write U disk or mobile hard disk data. Containing file system. fat32 format

这是用atmega8制作的usbisp编程器，有一个用protel dxp 画的 PBC图和 原理图，加固件和烧写软件！烧写M8时注意配好熔丝！-This is used atmega8 produced usbisp programmer, there is a schematic diagram and pcb, reinforcement parts and software programmer! With good attention to fuse!