this is resouse of gps reciever.

功能： 1、作为下位机采集8255数据并将此数据通过通讯送出， 2、采集数据为BCD，先转换成二进制，处理后再转换成BCD 3、通讯采用方式3，多机通讯，上位机发地址时TB8=1，其他TB8=0 下位机SM2=1，RB8=1时产生中断后使SM2=0收发数据，结束后SM2=1-Features: 1, as under the 8255-bit machine data collection and communications sent through this data, 2, collected data for the BCD, first converted into binary, and then converted to deal with BCD 3, communication using methods 3, multi-machine communication, PC-fat address TB8 = 1, other TB8 = 0 under the digital machine SM2 = 1, RB8 = 1 when the failure to make SM2 = 0 to send and receive data, after the end of SM2 = 1

sanDisk sd卡标准协议手册，很好的资料-sanDisk sd card standard protocol manual, very good information

单片机控制MAX485的485总线收发程序，已经用于实际工程中！超级稳定！-MAX485 single-chip control of the 485 bus to send and receive procedures are used for the actual project! Super stable!

AVR单片机开发典型实例 包含源码 电路 图片 -Typical examples of single-chip AVR development contains source circuit picture

ASC 信号机控制程序,国内最先进的信号机控制程序-ASC signal control procedures, the most advanced signal control procedures

24C02的读写时序和源码，经测试能用，可以向24CXX推广。-24C02 timing and source of reading and writing, can be used by the test can be made to promote 24Cxx.

动态扫描键盘,键盘采用矩阵式结构,用KEILC51编译并运行过,可靠性好-Dynamic scanning keyboard, the keyboard matrix structure, using KEILC51 compiler and run-off, reliability, good

我写的C8051F02x的一部分模块库，目前是OSC和UART的-I wrote part of C8051F02x module library is currently the OSC and the UART

MCS-51单片机汇编小程序，键盘控制数码管输出相应数字-MCS-51 single-chip microcomputer to compile a small program, keyboard control of the digital control output corresponding figure

： 8×8，16×16，至256×256大小的各种字体字母，数字，汉字点阵字库提取程序支持C51和汇编格式,232通信发送二进制文件,能把所生成的字库数据通过232串口发送出去,不用任何协议,方便单片机调试 8×8，16×16，至256×256大小的各种字体的字母，数字，汉字点阵字库提取程序,支持C51和汇编格式,232通信发送二进制文件,能把所生成的字库数据通过232串口发送出去,不用任何协议,方便单片机调试-: 8 × 8,16 × 16, to 256 × 256 size of the various fonts of letters, numbers, Chinese characters dot-matrix font support C51 extraction procedures and compilation format, 232 communications to send binary file, can the font data generated through 232 serial port to send out, without any agreement, to facilitate debugging single-chip 8 × 8,16 × 16, to 256 × 256 size of the various fonts of letters, numbers, Chinese characters dot-matrix font extraction procedures, to support the C51 and compilation format , 232 communications to send binary file, can the generated font data sent through the serial port 232, do not have any agreement to facilitate the single-chip debugging