工业控制源！使用步骤7！相关的现场总线

改进中的数码显示灯0000--9999 实验名: 八个数码管显示 功 能:让实验板上八个数码管循环显示0-9十个数 硬件环境: 自制单片机实验板， 软件环境: Windows操作系统 使用软件：伟福 V3.20, Easy 51Pro v2.0-To improve the digital display lights in the 0000- 9999 Experiment name: eight digital display Function: 8 to allow on-board digital tube experiments showed that the cycle number of 10 0-9 Hardware environment: self-made single-chip board, Software Environment: Windows operating system The use of software: Fu Wei-V3.20, Easy 51Pro v2.0

ATmega128具备引导加载支持的用户程序自编程功能(In-Sysytem Programming by On-它提供了一个真正的由MCU本身自动下载和更新-ATmega128 bootloader with support user program from the programming function (In-Sysytem Programming by On-It provides a real per se by the MCU to automatically download and update

本例中含有电路图及程序，单片机的仿真也含其中，很有用哦-In this case contains circuitry and procedures, including single-chip microcomputer in which the simulation is also useful Oh! !

在有线电视中实现程控有源滤波器设计。为了充分利用设备和传输线,需要一种具有频率选择的网络―滤波器,将同一线 路上不同的信号分开,在电视机中也需要不同的滤波器(即选择有用信号,抑制无用信号) 。下面利用8051 单片机与12 位分辨率的DAC1208 数模转换芯片相结合的系统实现时间常数可程控有源滤波器设计,阐述了硬件结构与软件设计-In cable television in the realization of program-controlled active filter design. In order to make full use of equipment and transmission lines, the need for a frequency selective network- filter, the same lines separate different signal in the TV also requires a different filter (ie, choice of useful signals and suppress unwanted signals). Following the use of 8051 and 12-bit resolution digital-to-analog converter DAC1208 chip combining system time constant can be program-controlled active filter design, the hardware structure and software design

51单片机学习最好的途径，每章节都有程序作附件-51 SCM best way to learn, each chapter has procedures in Annex

单片机用于控制NFR2401的程序，可实现ZIGBEE功能-This is a mcu programmar to control NFR2401

1T单片机延时程序头文件代码，us，ms，s延时直接调用，无需再写-1T delay program header file code for MCU

320240lcd Drive 89系列单片机通用-320240lcd Drive 89 Series Single-chip Universal

无线收发c程序,适合各种基于单片机的接收发送程序-Wireless transceiver c procedures, suitable for single-chip microcomputer-based receiver to send a program

按键扫描 51单片机加8279 8279通过74LS 138译码器扩展4×4键盘、6位显示器。 由3-8译码器对SL0～SL2译出键扫描线，由另一3-8译码器译出显示器的位扫描线，并采用了编码扫描方式。 为了防止出现重键现象，扫描输出线高位SL3不参加键扫描译码。CPU对8279的监视采用了查询方式，故8279的中断请求信号IRQ悬空未用。 -Scan button 82,798,279 plus 51 single-chip decoder 74LS 138 through the expansion of 4 × 4 keyboard, the display 6. From 3-8 decoder SL0 ~ SL2 translated to the key scanning line, by another 3-8 decoder translated display scan line, and uses code scanning. In order to prevent the emergence of the phenomenon of re-key, scan the output line does not take part in high level SL3 scan decoding keys. CPU on the 8279 surveillance using the query mode, the 8279 interrupt request signal IRQ left unused.