两个7段共阳LCD显示器，可以调整倒计时时间

HT1621 ASM程序和HT1621的PDF文件资料-HT1621 ASM procedures and HT1621 PDF documents

8051控制硬盘驱动-8051 control drives

增加ASCII.C的一个ASCI码(7F),用于虚拟按键用 修改UART串口的命令解析程序，修改RTC的pcf8563中断部分。 精简IIC和smart_timer代码,添加define.h的宏定义。 修改system.c里的消息堆栈的宏定义 增加ii.c函数,支持对eeprom的打包 增加由PLD或者GPIO输出的模拟UART，在6个CLOCK下速度为57.6K 增加消息的优先级功能，消息类型的前4位为消息的优先级，后4位为消息的类型 试用于初学单片机并且想更上一层楼的，或者有些基础，想减少工作量的。-an increase ASCII.C the ASCI code (7F) for the virtual keys with serial UART to amend the order analytic procedures, the revised RTC pcf8563 interruption part. IIC and smart_timer streamline code, add the definition of Acer define.h. The revised system.c news stack macros increase II.c function, support for EEPROM packaged increase from the PLD or GPIO output analog UART, in the next six CLOCK speed of 57.6K news of the priority function of the type of information before news of the four priority levels after four types of information on the trial beginner to a higher level and SCM, or some foundation, we want to reduce the workload.

C8051F320和89c52的串口通讯程序，c语言编写-C8051F320 and 89C52 Serial communication procedures, c language

PADS2005 WORK IN LAYOUT PCB -PADS2005 WORK IN LAYOUT PCB

kell c51 vision2入门教程,一本很好的工具书哟,大家不妨看看嘛?-kell c51 vision2 Tutorial, a good tool yo, we may as well take a look at them?

单片机控制GPS ，有详细的电路图和代码，希望可以帮助有需要的pymen -SCM GPS, has detailed schematics and code, hoping to help those in need pymen

基于MPX4105的数字气压计，用单片机控制，希望大家喜欢！-MPX4105 figures based on the barometer, using single-chip control, I hope everyone likes!

两个点的线性插值定点数算法 说明：1、基本公式 y=( y2-y1 ) ( x-x1 ) / ( x2-x1 ) + y1 2、根据直线斜率的正负、内插外插的不同，分为6种情况。 3.参见文件夹中的“插值算法的6种情况”一图。-two points of linear interpolation algorithm for determining points : one, the basic formula y = (y2- y1) (x-x)/(x2- x1) y1 2, according to the slope of the linear positive and negative, interpolation, extrapolation of different, divided into six kinds of situations. 3. See folder "interpolation algorithm for the six species of" a map.

51单片机虚拟串口,解决只有P3.0/P3.1单串口的不足-51 single-chip virtual serial port, serial port solution is only the inadequacy of single-P3.0/P3.1