校园打铃系统，内带51单片机c语言程序和电路原理图以及PCB

8051f02x 单片机的实用排序子程序。-Singlechip 8051f02x practical sort subroutine.

51单片机开发的等精度数字频率计，实现计数0--51 Single-chip, such as the development of precision digital frequency meter, realize counts 0--

非常之经典的MCS51程序,非常适合初学者-very classic MCS51 procedures, very suitable for beginners

这是一套基于单片机的温湿度测量系统，里边附有设计的原理图，pcb图，以及烧写程序代码（keil c51编写的）。温湿度传感器使用的是dht11，性价比高。该系统除了能显示温湿度以外，还能设置温湿度报警阈值。设计的pcb板，小巧，使用。这是本人的毕业设计，有实物为依据，具有可操作性。-This is a single-chip microcomputer-based measuring system of temperature and humidity inside with schematic design, pcb plans, as well as the programmer code (keil c51 prepared). Temperature and humidity sensors are used dht11, cost-effective. Except that the system can display temperature and humidity outside, but also set the temperature and humidity alarm threshold. Pcb board design, compact, use. This is my graduation project, there is the physical basis of operational.

利用51单片机控制DS18B20温度传感器采集温度，并利用无线传输模块PTR6000将温度值进行传送，很实用的程序，绝对原创和好使！-SCM control DS18B20 using 51 temperature sensors collect temperature, and using wireless transmission module PTR6000 to send the temperature value is very useful procedure, the absolute original and so!

keil c51 keil c51

需要控制320*240的lcd的朋友可以看看，非常实用-Need to control 320* 240

通过单片机定时器 来设定任意比的pwm波-Through the single-chip microcomputer to set arbitrary timer pwm wave ratio

交通灯控制的简单程序，通过此程序，可以实现简单的交通灯控制设置-Traffic lights to control a simple process, through this procedure, you can realize a simple control set of traffic lights

开发环境:ADS 1.2 目标平台:ARM:S3C44B0 显示屏:tft4.3" 480*272(24Bit) GUI:UCGUI324 项目功能:实现UCGUI在ARM7和彩屏LCD上成功移植 Seloo@tom.com 2008-10-12-Development Environment: ADS 1.2 target platforms: ARM: S3C44B0 display: tft4.3