用51 控制对接收来自0832的信号进行ad转换

VB-RS232通讯协议, 比较经典的代码。-VB-RS232 communication protocol to compare the classical code.

用C实现广告灯箱自动装置1、直流电机控制系统，控制广告牌的升降。 2、定时翻转广告，可由按键设定时长。 3、时间设置，5：00-22：00正常工作，其余时间不工作，时间可以调整。 4、到达广告的边缘部分广告停止翻转。 5、广告可以由按键设置升/降。 6、白天时间广告灯不亮，光线较暗时广告灯才亮，测试灯的好坏时可以手动控制灯光。 7、断电时保存时间及按键的设置，使广告牌到达边缘部分。 -C implementation using automatic device 1 advertisement light box, DC motor control system, control the rise and fall of advertising. 2, ads from time to time reversal, length of time set by the keys. 3, time set ,5:00-22: 00 normal job, the rest of the time does not work, time to adjust. 4, Get ads ads stop some of the edge flip. 5, ads can be set up by the button/drop. 6, ads during the day time lights are not bright, low light only bright lights when the ads to test the quality of light can control the lights manually. 7, when power-off time and save the settings button so that the edge part of advertising arrival.

本系统分电压测量和信号产生输出两大部分，电压测量部分以模拟电路为主，配合放大模块、A/D转化模块、显示模块；通过凌阳单片机进行数据处理，在误差允许范围内显示测量电压值。信号产生以直接数字式频率合成器为核心，经过AT89S52对DDS芯片内部进行控制，使之输出标准正弦波形，利用编程实现频率预置、步进，达到电压输出频率的可调节步进。通过调试与测量完成了题目的基本部分和全部发挥部分的要求并有自己的创新。-Voltage measurement points of the system and the output of two major signals, voltage measurement circuitry to simulate the main part, with the amplification module, A/D conversion module, display module through Sunplus Single-chip data processing, in the range of error allowed shows the value of measuring voltage. Signal generated by direct digital frequency synthesizer for the core of the DDS chip AT89S52 after the internal control standards so that the output sine wave shape, frequency of use of pre-programming, step to the output voltage adjustable frequency step. Debugging and measurement, through the completion of the basic part of the topic and all the requirements to play a part and have their own innovation.

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This is project AVR with LCD nokia 1202, RTC DS1302 ...................................................................................................................................................................................................................................................................................................................................................

读取usb信息，非常有用，另外还有源码供大家学习之用，真的很不错的-read usb information, very useful, there is another source for all learning, really good

MCS与51通讯的程序,PC侧采用VB6.0。--Communication between MCS and 51. PC side uses VB6.0.

pic programming guide in c

ZLG的Smartarm2200上uClinux boot代码，含Tcp/ip、FTP-S和文件系统代码。仅供学习。-ZLG the Smartarm2200 on uClinux boot code, with DEC/ip, FTP-S and file system code. Only learning.

SNMP++程序源码 for ll .8snmp++2_8.tar.Z 嵌入式linux环境下的SNMP开发代码，对于进行网络管理的开发来说，非常有帮助。-procedures source for SNMP ll .8 snmp 2_8.tar.Z embedded Linux environment under the code SNMP, network management for the development, has been very helpful.