本文介绍了AT89C2051单片机的性能和特点，并在分析了超声波测距原理的基本系统框图。该设计系统经校正后，其测量精度可达0.1米...

用于手持时钟受时，时钟芯片的工作稳定性，以D18B20温度传感器的采集，微调时钟芯片的内置电容，改变震荡频率-For hand-held by the clock, the clock chip of job stability to temperature sensor D18B20 collection, fine-tuning of the built-in clock chip capacitors to change the vibration frequency

Nokia3310的proteus仿真模型model.zip

精度为20位的数模转换芯片CS5503数据手册，有需要的朋友可以下来-Low-Cost, 16 & 20-Bit Measurement A/D Converter

很有用的单片机资料-useful information on the SCM

1302 c51程序 数码管显示，秒，分，小时，日，月，年，都可设置-1302 c51 process digital tube display, seconds, minutes, hours, days, months, years, can be set up

关于stc11f32xe的应用，内部狗，eeprom使用，扩展存储ram。-With regard to the application of stc11f32xe Internal dogs, eeprom use, expansion of storage ram.

80X87 CPU汇编大全！内容丰富，汇编工程师不可多得的资料！-80X87 CPU compilation Series! Rich in content and engineers a rare compilation of information!

自动交通管理系统 用红、绿、黄三支共两组发光二极管表示交通信号灯，利用单片机模拟有时间显示的定时交通信号灯控制管理。信号灯的变化规律可如下： 1）放行线：绿灯亮放行25秒，黄灯亮警告5秒，然后红灯亮禁止。 2）禁止线：红灯亮禁止30秒，然后绿灯亮放行。 3）当某一方向的红灯亮时，若该方向有车通过，则用扬声器声报警。（撞红灯信号可用3-5V模拟量表示） 同时用2位数码管进行30秒钟递减时间显示。-automatic traffic management system using red, green, yellow a total of three light-emitting diodes, said two traffic lights, using SCM time simulation shows the regular traffic signal control. Signal changes in the law to be as follows : 1) Release Line : green clearance 25 seconds, bright yellow warning five seconds, and then the red-ban. 2) prohibit the lines : red-Ban 30 seconds, then green clearance. 3) When the red light in one direction- that if the direction of a car passed, the use of loudspeakers sound alarm. (Red light signals can hit 3- 5V analog said), while using two digital tube for 30 seconds decreasing time displayed.

开发短信，在WINDOWINS环境下的开发程序，可以实现短信的收发功能-development of SMS, WINDOWINS environment in the development process, can achieve SMS transceiver functions

三菱PLC上位机程序详细例子，很适合基础入门-Fix-PLC Commuation to Computer