rs485

NPN silicon planar epitaxial transistor encapsulated in a SOT223 surface mounted envelope and designed primarily for use in hand-held radio equipment in the 470 MHz communications band.

利用ULN2003A进行驱动，产生PWM波，里边有照片，可供参考，通过本例程了解PWM 的基本原理和使用 (#include <reg52.h> unsigned char timer1 sbit PWM=P1^2 void system_Ini() { TMOD|= 0x11 //PWM TH1 = 0xfe //11.0592 TL1 = 0x33 TR1 = 1 IE =0x8A } main() { system_Ini() while(1) { if(timer1>100) timer1=0 if(timer1<30) PWM=0 else PWM=1 } )

① 设计进程控制块PCB表结构，分别适用于优先数调度算法和循环轮转调度算法。 ②建立进程就绪队列。对两种不同算法编制入队子程序。 ③编制两种进程调度算法：1）优先数调度；2）循环轮转调度 (① design process control block PCB table structure, respectively, for priority scheduling algorithm and round-robin scheduling algorithm. ② establish a process ready queue. Two different algorithms for the preparation of subroutine into the team. ③ preparing two kinds of process scheduling algorithm: 1) priority scheduling 2) round-robin scheduling)

一个很实用的Listctrl，可以加图标（连Header都可以加图标），可以单Item的编辑，有下拉框，可以改变底色和文字颜色(A very practical Listctrl, can be added icon (with Header icon can be added), can single-Item editor, has drop-down box, you can change the background color and text color)

搭建onvif设备端代码 非常有用，可以配合ONVIF Device Manager测试(Device-side code to build onvif)

基于PSCAD/EMTDC的感应电动机负荷模型对电压恢复的影响。(Influence PSCAD/EMTDC induction motor load model based on voltage recovery.)

状态机按键检测，实现单击双击多击功能,单片机用的是STM8L(Key detection state machine to achieve multi-click-click, double-click function)

说明：  通过SSDTHOOK技术实现文件隐藏。。(File hidden by SSDTHOOK technology. .)

AGV小车上位机控制程序,通过TCP/IP协议来进行数据的传送(AGV car PC control procedures, through the TCP/IP protocols for data transmission)

关于瑞士SHT11程序，把采集的数据在液晶上显示(Switzerland SHT11 procedures on the data collected in the liquid crystal display)