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该防盗系统使用热释电红外传感器作为人体探测模块，并将防盗系统设计为两个用户可选择的模式：在家模式和离家模式，当处于在家模式时，如果传感器检测到有人进入监控范围，则自动响起门铃提醒用户有访客，就不会发生误把访客当作盗贼的报警事件了；当处于离家模式时，如果传感器检测到有人进入检测范围，则开启声光报警模块进行报警。同时，该系统为密码控制系统，用户通过输入正确密码才可改变模式和解除警报，这也增强了该系统使用的可靠性。(The anti-theft system using pyroelectric infrared sensor as the detection module, and alarm system design for the two user selectable mode: home mode and home mode, when in the home mode, if the sensor detects a person into the monitoring range, will automatically alert the user to a visitor rang the doorbell, will not happen take the visitor as an alarm event of thieves; when in the home mode, if the sensor detects a person into the detection range, open alarm alarm module. At the same time, the system is a password control system that allows users to change their mode and lift their alarms by typing in the correct password, which increases the reliability of the system.)

nordic 2.4G RF transceiver nRF24z01 firmware source code.(nordic 2.4G RF transceiver nRF24z01 firmw are source code.)

高效DPD算法在无线基站设备中，末级功率放大器的失真是影响无线带宽的主要因素之一。当前业界的主流解决方案是采用数字预失真技术，在下行信号中加入失真补偿分量以对消PA输出的失真成分，达到提升带宽的目的。(The distortion of the amplifier is one of the main factors that affect the wireless bandwidth. The mainstream solution of the industry is to use digital pre distortion technology, in the downlink signal to join the distortion compensation component to eliminate the distortion of the PA output components, to achieve the purpose of improving the bandwidth.)

this .rar contain source code in basic for avr microcontroller for making drifter device to measure water velocity on the sea surface

需要一个4个以上按键，一个LCD显示">

Iar环境下avr_bootloader的编写，可以参考参考。(Preparation of Iar under the environment of avr_bootloader, can refer to the reference.)

STM32F103RBT6和W5200网络芯片的服务期端的测试程序，减少了很多不必要的设置，测试更方便(W5200 STM32F103RBT6 and end of service network chip testing procedures, to reduce a lot of unnecessary settings, the test is more convenient)

A padder that adds the padding according to the scheme referenced in ISO 7814-4 - scheme 2 from ISO 9797-1. The first byte is 0x80, rest is 0x00.

某地220kv母线负荷数据，对电力研究很有用(A 220kV bus load data, very useful for electric power research)

说明：  详细介绍基于C51的芯片FS8610的DLL文件调用函数，方便用户开发(Detail based on the C51 chip FS8610 call the DLL file function, user-friendly development)