Keil uVision4 破解文件，无2K限制，很好用。自行下载 C51V900.exe 即可。-Keil uVision4 crack file, no 2K limit, easy to use. You can download the C51V900.exe from keil official webside.

以C8051F340为CUP，外接GPS，对GPS的控制程序以及对接收到的GPS数据进行提取，坐标转换，时间转换等，是用keiluVision4进行编写的-In C8051F340 as CUP, external GPS, the GPS control procedures as well as the received GPS data extraction, coordinate conversion, time conversion

适用于STC51单片机，实现超声波测距，C语言编写，KEILUVISION4亲测可用-Applicable to STC51 MCU, the realization of ultrasonic ranging, C language, KEILUVISION4 pro is available