Drawable_ConstantStateTest

说明：  Protel99开发 高速PXA270 主频600MHZ处理器，很好的图纸，奉献给很好的平台(Protel99 develops high-speed PXA270 600 MHz processor, good drawings, dedicated to a good platform)

说明：  7290显示 7290显示 7290显示(7290 show revealed 7,290 7,290 7,290 showed 7290 show revealed)

说明：  四方的通信管理机程序，绝对的超值，很多规约的处理，101 103 103 104 CDT DNP SC1801 CSC2000等，千万别走漏风声啊，(sifang processs protel control center )

说明：  tsm12s触摸密码锁按的数字，会在stc89c52数码管上显示(Tsm12s touch the password lock to press the number, will be displayed on the STC89C52 nixie tube)

本书主要介绍了8051单片机C语言软件设计的思维及解决方法，每一章都是一个精彩的例子，范例说明深入浅出。重点介绍软件的设计流程、软件的构思和解决方法。在实例中说明模块化程序设计的各种指令的应用，使读者可以更有效地学习。(This book mainly introduced the 8051 microcontroller C language software design thinking and solving methods, each chapter is a wonderful example, explaining the examples. Focus on the introduction of the software design process, software design and the solving methods. In the example illustrate modularization program design of the application of various commands, so that readers can learn efficiently. )

ISO/IEC 7816-1-1998 ISO/IEC 7816-2-1998 ISO/IEC 7816-3-2006 ISO/IEC 7816-4-2005 ISO/IEC 7816-5-2004 ISO/IEC 7816-6-2004 ISO/IEC 7816-7-1999 ISO/IEC 7816-8-2004 ISO/IEC 7816-9-2004 ISO/IEC 7816-10-1999 ISO/IEC 7816-11-2004 ISO/IEC 7816-12-2005 ISO/IEC 7816-13-2007 ISO/IEC 7816-15-2004 (ISO/IEC 7816-1-1998 ISO/IEC 7816-2-1998 ISO/IEC 7816-3-2006 ISO/IEC 7816-4-2005 ISO/IEC 7816-5-2004 ISO/IEC 7816-6-2004 ISO/IEC 7816-7-1999 ISO/IEC 7816-8-2004 ISO/IEC 7816-9-2004 ISO/IEC 7816-10-1999 ISO/IEC 7816-11-2004 ISO/IEC 7816-12-2005 ISO/IEC 7816-13-2007 ISO/IEC 7816-15-2004)

基于stm32实现的CAN读取OBD数据，通过串口上传至上位机(CAN Reading OBD Based on stm32)

说明：  使用单片机利用超声波测距，里面包括源代码(Using Single Chip Microcomputer to Measure Distance by Ultrasound)

说明：  基于51单片机，芯片stc89c52,使用PCF8591ad转换器的源代码(Based on 51 MCU, chip stc89c52, using PCF8591ad converter source code)

说明：  STM32 POS机底层驱动程序，包含打印机驱动程序，SPI FLASH驱动程序，RC522驱动程序 ，PASM卡（7816）驱动程序，磁条卡驱动程序，ILI932X液晶模块驱动程序，键盘驱动程序等(STM32 POS bottom driver, including printer driver, SPI FLASH driver, RC522 driver, PASM card (7816) driver, magnetic stripe card driver, ILI932X LCD module driver, keyboard driver, etc.)