keil arm flash fs the latest version of the Keil arm use

液晶显示器以其微功耗、体积小、显示内容丰富、超薄轻巧的诸多优点，在袖珍式仪表和低功耗应用系统中得到越来越广泛的应用。 这里介绍的字符型液晶模块是一种用5x7点阵图形来显示字符的液晶显示器，根据显示的容量可以分为1行16个字、2行16个字、2行20个字等等，这里以常用的2行16个字的1602液晶模块来介绍它的编程方法。 -LCD display with its micro-power consumption, small size, display rich content, ultra-thin lightweight many advantages, in the pocket instrumentation and low-power applications are more and more widely. Here introduce the character LCD module is a 5x7 matrix used to display graphics characters liquid crystal display, according to show that the capacity of one line can be divided into 16 characters, 2 lines 16 characters, 2 lines 20 characters and so on, here commonly used 2 lines 16 characters LCD module to the 1602 introduction of its programming method.

基于AT89C52的单片机4X4键盘原理图，可用于小系统板-Based on AT89C52 microcontroller 4X4 keyboard schematics, can be used for a small system board

CC2420初始化程序，使用CC2420快速入门源码-CC2420 initialization procedures, the use of CC2420 QuickStart source

mifare 读卡器weigant输出有kei uvision打开！-MIFARE reader weigant output is Kei uvision open!

at24c01,at24c02,c语言 源程序-at24c01, at24c02, c language source code

本文介绍了AT89C2051单片机的性能和特点，并在分析了超声波测距原理的基本系统框图。该设计系统经校正后，其测量精度可达0.1米-This paper introduces the AT89C2051 MCU performance and features, and the analysis of the basic principle of ultrasonic distance measurement system block diagram. The design system has been corrected, the measurement accuracy up to 0.1 meters

名称：继电器程序 功能：控制两个继电器轮流闭合，断开 分别由两个继电器控制的LED闪烁 -Name: Relay program features: control two relays alternately closed, disconnect the relay controlled by two LED flashes

本程序是用于通用同步和异步串行接收器和转发器（ＵＳＡＲＴ），使用中断方式异步接收和发送数据通信源的程序文件。-this procedure is common for serial synchronous and asynchronous receiver and transponder (USARTs), the use of asynchronous interrupt receive and transmit data communication source program files.

51单片机c语言编程实例及一些经验，很实用的。-51 MCU c language programming examples and some experience, it is practical.