vb_温湿度_Access

读写器与射频卡通信的设计采用RC522射频读写芯片与射频卡进行通信，符合ISO14443规范协议；硬件系统设计中主要有AVR单片机主控模块、电源模块、存储模块、外部时钟模块、LCD模块；软件系统设计采用C语言，遵循模块化和结构化编程模式，设计了射频卡操作程序、软关机与自动关机程序、LCD显示、串行Flash存储器、外部时钟等外部设备驱动程序。所设计的手持式读写器具备对MF1 S50、S70射频卡的读写、实时状态显示、系统在线升级以及关机等功能。(This handset can process the data offline or online, reading and writing from 10 cm far. This handset is low-power, miniature, modular design and so on. This article includes: the communication design between RF card and Reader, hardware system design and software systems design. The communication design between RF card and Reader used to RC522 RF chip control RF cards, in line with ISO14443 standard protocol Hardware system design mainly include AVR microcontroller control modules, power modules, memory modules, external clock modules, LCD modules Software system designed with C programming language, and follow the modular structure of the programming model, and has the RF card operation procedures, soft shutdown and automatic shutdown procedures, LCD display, serial Flash memory, an external clock, and other external device driver Procedures. The handset readers has the MF1 S50, S70 RF card reader function, real-time status display function, the system online update function and so)

数码管的显示程序，数码管循环显示900-999~(Digital loop display 900-999 ~)

说明：  定时器的使用，让你了解使用定时器所必须的几个步骤！从而能够使用(the use of timers let you know by the use of timers to be a few steps! In order to use)

C++ SDK绘图。涉及函数：WinProc Draw(C++ SDK graphics. Related to function: WinProc Draw)

网上买到的 HI3518 下的 简单DVR CODE, 需要你了解 3518 SDK， 才能编译， (Simple DVR CODE HI3518 under buy online, you need to understand 3518 SDK, you can compile,)

辅助数字电路课程学习，说明TTL电路中驱动电流之间的 关系。 (auxiliary digital circuit courses on TTL circuit-drive current relationship.)

开关电源测试 标准 (Switching power supply testing standards)

CC2530 步进电机控制实验。一个简单的例程(CC2530 stepping motor control experiment)

说明：  红外遥控解码C51红外遥控解码C51红外遥控解码C51红外遥控解码C51(Infrared remote control Infrared remote control decoder decoding C51 C51 C51 infrared remote control Infrared remote control decoder decoding C51)

飞思卡尔单片机xs128AD模数转换代码(Freescale microcontroller xs128AD of analog-to-digital conversion code)