drawing

绿灯亮时，准许车辆通行，黄灯闪烁时，已越过停止线的车辆可以继续通行；没有通过的应该减速慢行到停车线前停止并等待，红灯亮时，禁止车辆通行。给行人看的叫人行横道灯，通常指由红、绿（绿为蓝绿）二种颜色灯组成用来指挥交通通行的信号灯，红灯停，绿灯行。(When the green light is on, the vehicle is allowed to pass. When the yellow light is flashing, the vehicles that have crossed the stop line can continue to pass.You should slow down to stop and wait at the stop line. No traffic is allowed when the red light is on.Pedestrian crossing lights for pedestrians, usually denoted by red, green (green, blue, green), two color lamps used to direct traffic signals, stop at red lights and green.)

第一章 介绍 概述 Cx51 编译器 第二章 用 Cx51 编译 解释怎样用 Cx51 交叉编译器编译一个源文件 本章叙述控制文件处理编译和输出的命令行提示 第三章 语言扩展 叙述支持 8051 系统结构须的 C 语言扩展 本章提供一个在 ANSI C 说明中没有的命令 函数 和控制的详细列表 第四章 预处理器 叙述 Cx51 编译器预处理器的组成和包含的例子 第五章 派生的 8051 叙述 Cx51 编译器支持的 8051 派生系列 本章还包括能帮助提高目标程序性能的技巧 第六章 高级编程技术 对有经验的开发人员的重要信息 本章包括定制文件 描述 优化器详细资料 和段名约定 本章还讨论了 Cx51 编译器产生的程序和别的8051 编程语言如何接口第七章 错误信息 列出了在使用 Cx51 编译器时可能遇到的致命错误 语法 错误和警告 第八章 库参考 提高一个扩展的 Cx51 库参考 分类列出了库例程和相关的 包含文件 本章最后有一个按字母顺序的参考 包括每个库例程的例子代码附录中包含不同编译器版本间的差异 作品编号 和别的有些信息(This manual describe how to 8051 target, environment using Cx51 Cx51 compiler optimization C compiler C program packages can be used in all the 8051 series processors can perform in the WINDOWS 32 bit command line in this hand )

实现射线源控制，包括电压，电流，大小焦点。还有图片按钮。(Achieve-ray source control, including voltage, current, the size of the focus. There are picture buttons.)

ad7991测试程序，需要自己填写控制字(ad7991 testing procedures need to fill their own control word)

PIC控制系统包涵盖了大量的开发性论文，包括PLC控制系统的可靠性设计、八层电梯PLC控制系统及组态设计、基于PLC控制技术的电容测试分选机等实用性论文，希望对大家能有所帮助。(PIC control system covers a large number of development packages of papers, including the reliability of PLC control system design, PLC control system and the eight-story elevator configuration design, PLC control technology based on the capacitance of the test separator and other practical paper, we want to can help.)

本程序是TI的32位单片机LM3S9D96官方开发板上、基于IAR平台的，用C语言编写的的一个设计AD、液晶显示、串口打印的完整工程文件。已经调通。原创的程序。对于掌握LM3S些列单片机的高级功能很有用。(This program is TI' s 32 the microcontroller LM3S9D96 official development board, IAR platform, written in C language design the AD LCD, serial print complete engineering documents. Has been transferred Qualcomm. Original program. Useful advanced features master LM3S these columns microcontroller.)

矩阵键盘密码锁+简易计算器，C52的单片机平台，C语言开发，适用于初学学习。(Matrix keyboard lock+ simple calculator, C52 MCU platform, C language development, suitable for beginners to learn.)

21天学通51单片机开发源代码，学习51单片机的教材，值得下载(21 Days 51 MCU development of source code, 51 MCU learning materials, worth downloading)

最新最全的二条码编码资料大全，全面介绍如何制作PDF417、QrCode、DataMatrix、Hanxin等条码制作方法，有详细图文说明，有了此文档，编码无忧。(The latest and most complete the two yards encoding information Daquan, comprehensive introduction to how to make the PDF417, QrCode, DataMatrix, Hanxin barcode production methods, with detailed captions, this document encoding worry-free.)

$regfile = M8DEF.dat internal crystal 8000000 Config Lcdpin = Pin , Db4 = Portc.1 , Db5 = Portc.2 , Db6 = Portc.3 , Db7 = _ Portc.4 , E = Portd.2 , Rs = Portd.3 Config Lcd = 16 * 2 Config Timer1 = Counter , Edge = Rising Ddrb.1 = 0 : Portb.1 = 1 PULL UP RESISTOR ACTIVATED Config Timer0 = Timer , Prescale = 1024 Enable Counter1 Enable Interrupts Enable Timer0 Enable Timer1 On Ovf1 Pulsecount On Ovf0 Ovf0occures Dim A As Long , I As Long , B As Byte B = 0 Cls Start Timer0 Do Loop End end program Ovf0occures: Incr I If I > 30 Then Stop Timer0 Cls : Home A = B * 65536 A = A + Counter1 Lcd FREQ IS : A HZ B = 0 I = 0 : Counter1 = 0 Start Timer0 End If Return Pulsecount: Incr B Counter1 = 0 Return