上车按键后开始计价。有实时时钟、单价、距离和总价钱显示。可以通过键盘修改单价（元/公里）和时间。有清除键用以清楚上次费用。利用LCD分别显示时间、单价、路程和费...

24C01 24C02的C51源程序|串口通信C51源程序， 未整理，但编译后的HEX代码可在WS803上直接运行。-24C01 24C02 source of C51 | Serial Communication C51 source, not collate However, the compiled code of HEX at WS803 directly run.

usb转串口单片机固件程序，能实现usb-232的双向转换-usb to serial single-chip firmware, usb-232 to achieve the two-way conversion

MODBUS通信协议MODBUS源代码最初是MODICON为自己生产的PLC（可编程逻辑控制器）协议而开发的，后来广泛应用于工业部门，这是一对多的通信方式，他的方式是免费开放的，任何人都可以开发，这么多的PLC，人机界面和控制软件有支持方案。

本次设计的RS232 to USB 转换器采用HT82M99E 和MAX232 芯片，其中HT82M99E 为主控芯片，MAX232 为RS232 level shift。本次设计的RS232 to USB 转换器使用操作系统提供的USB HID 设备类驱动程序。-The design of the RS232 to USB converter using HT82M99E and MAX232 chip, which HT82M99E for the master chip, MAX232 for RS232 level shift. The design of the RS232 to USB converter to use the operating system to provide the USB HID device class driver.

触摸屏基础知识大全与最新多点触摸屏技术介绍-多点位置识别-Basic knowledge of touch screen Guinness with the latest multi-point touch screen technology introduction- multi-point location identification

系统下,地球坐标转换的源代码,在WGS-84坐标和北京54坐标之间的一套转换参数,可以全国通用的，在每个地方会不一样，因为它们是两个不同的椭球基准。 // WGS2GK.CPP : C++ version of Ottmar Labonde s WGSDHDN3.PAS with CPU time measurement // compile with MS Visual C++ version 6.0 or do the necessary modifications for your compiler // // Conversion of -system, the Earth coordinates conversion source code, the WGS-84 coordinates and coordinate between Beijing 54 set conversion parameters can be nationwide, in every place to be different, because they are two different ellipsoid benchmarks.// WGS2GK.CPP : C version of Silverstone Labonde s WGSDHDN3.PAS with CPU time measurement// compile with MS Visual C version 6.0 or do the necessary modifications for your compiler//// Conversion of

ad0831模数转换必须，很哟用的，我也是找了好久哦，大家一起分享把！-ad0831 analog-digital conversion necessary, the very yo, I was looking for a long time, oh, we put together to share!

PIC上实现的I2C通讯源程序，使用IO口模拟I2C总线时序来实现的。-PIC achieve I2C communications source, I use IO I2C bus timing simulation to achieve.

基于12887和80c52的时钟程序，c语言开发 -based on the 12887 and 80c52 clock procedures, c-language development

对另一单片机传送过来的编码电平进行译码。并在16002上显示出接受到的字符-Transfer over to another microcontroller to decode the coding level. And 16002 characters on the show receive