一个操纵RS232端口的程序，可以进行端口的设置以及发送和接受。...

用8051开发usb的程序练习，对于初学者来说可以有需多的帮助-8051 with the development of the procedures usb practice, can run for beginners need more help

此内容包括 lpc2138 波计数器代码，其 Proteus 仿真原理图，在 keil 集成开发环境中工作。

应用背景如今考勤系统已经随处可见，如何高效考勤成为企业人事管理的重要组成部分。本设计是基于单片机的指纹识别考勤系统，具有指纹录入、比对、存储，考勤信息的存储、显示等功能。关键技术基于单片机的指纹识别考勤系统，单片机采用AT89C52，DS1302作为时钟模块，QC12864作为显示模块，AT24C02作为存储模块，FPM10A作为指纹识别模块。

单片机控制24C02芯片，实现IC卡的现实功能，本ＩＣ卡位接触式ＩＣ卡。-24C02 single-chip microcomputer control chip, the realization of the reality of functional IC card, the contactless IC card IC card spaces.

ucosII在arm920T内核s3c2410移植的代码.-ucosII in arm920T s3c2410 transplant kernel code.

该压缩包为ARM S3C44B0的源代码，含有5个程序。分别为按键控制LED,PWM脉冲宽度调制,RTC实时时钟，UART串口通信，DMA直接内存存取等5个实验的源代码。代码以C语言为主，辅以部分ARM汇编指令。该实验开发平台为S3C44B0板，开发工具为ADS1.2.-The package for the ARM S3C44B0 compression source code, which contains five procedures. Were keys to control LED, PWM pulse width modulation, RTC real time clock, UART serial communication, DMA direct memory access, such as five experiments the source code. Code to C language, supplemented by some ARM compilation directives. The experimental development platform for S3C44B0 boards, development tools for ADS1.2.

Powerpc网络处理器MPC85xx增强型三速以太控制器驱动程序-powerpc network processor MPC85xx enhanced triple-speed Ethernet controller driver

sst89c58下载器，使用keilc51的debug调试器下载。将本程序编译后写入sst89c58，并编程为remap 4kbytes。该芯片即有了keil环境下载功能,当p1.0拉低时，启动时进入下载程序，进入下载程序后将会自动删除block0,p1.0高电平时进入用户程序。 进入下载程序后，可以通过串口和keil的仿真环境连通，波特率自动调节,选择load HEX文件，即可将程序下载到sst89c58的低端32keeprom中。除了7e00-7fffh被占用-sst89c58 downloader, use the debug keilc51 Debugger download. This procedure compiled into sst89c58 and programming to remap 4kbytes. The chip has Keil environment that is the ability to download, p1.0 down, start the download entered into the download will be automatically deleted after block0, p1.0 to I enter the user program. After entering the download, through serial and Keil simulation environment connectivity, baud rate adjusts to choose load HEX documents, procedures and can be downloaded to the lower end of 32keeprom sst89c58 China. Apart from 7e00-occupied 7fffh

A rtx51 tiny example program

Mstart LCD 方案 USB 升级工具电路图-Mstart LCD USB Isp board sch