编写pwm程序的时候，肯定有用的程序，自己看一看

工程师在用Keil开发程序时，在代码性能要求较高的场合，需要对代码段的执行时间作统计。比如在做LED显示屏软件扫描程序，或一些定时采集数据程序，如果在软件仿真的时候就能够清晰知道代码段的运行时间，那就可以对程序进行优化，或者插入汇编代码(asm)达到最高运行速度。 关键字:Keil DLL C语言 ASM 汇编-engineers in the development process with Keil, the code performance requirements higher occasions, need to block the execution time statistics. For example, in the software do LED scanning procedures, or some regular data collection procedures, If the software simulation time can understand clearly code of the running time, it can process optimization, or insert code compilation (asm2) to achieve maximum speed. Keywords : Keil DLL C language compilation ASM

ah 209型通用读卡器驱动程序源码，ic卡，光电卡，隐形光电卡通用读卡器程序-ah 209-based driver-source general-purpose reader, ic card, photoelectric cards, stealth photoelectric reader program using cartoons

这是基于89C51单片机的实用热水器监视器源程序，程序由汇编语言编写-This is based on the 89C51 of usable water heater monitors source, procedures prepared by the assembly language

关于单片机应用过程的ISP技术详解，东西内容很全面-SCM application process on the ISP technology explain, something is very comprehensive

使用C8051F020和FPGA等其它相关硬件制作的一个程控滤波器，里面包括详细的源代码和设计文档，希望对大家有用。-C8051F020 and FPGA use and other related hardware produced by a program-controlled filter, which include detailed source code and design documents, in the hope that useful to everyone.

这是一个基于8051单片机的用c语言写的一个时钟程序，个人原创哦-This is a 8051 based on the use of c language program written in one clock, personal original Oh

飞思卡尔MC9S08AC60数椐手册.此单片机是飞思卡尔新推出的一款,确实不错.推荐给大家看一下.-Freescale MC9S08AC60 show manual number. This is a single-chip Freescale introduced a new, really good. Recommend to everyone to look at.

lcd显示程序,LCD菜单程序,可供学习LCD者使用 -lcd display program, LCD menu program for learning the use of LCD

P89V51RD2远程升级解决方案，iap源代码及其文档详细解析，源码通过验证可用-Remote upgrade P89V51RD2 solutions, iap detailed source code analysis and its documentation, source code available through the verification

这是单片机程序，需要一个GSM模块，用单片机控制GSM模块收发短信。-This is the SCM process, which takes a GSM module, using SCM control GSM transceiver module SMS.