ldpc

对delta sigma进行设计，实现delta sigma ADC的设计(this is use for delta sigma adc ,and design and achieve adc)

EM78P451 SPI官方使用程序，内涵主机模式、从机模式已经.INC头文件。(EM78P451 SPI The official use program, the connotations of the host mode, the slave mode has.INC header file.)

用于驱动2.13英寸的墨水屏，电纸屏。包含arduino、STM32平台的源码。(Used to drive an ink screen of 2.13 inches, an electric paper screen. Contains Arduino, STM32 platform source code.)

常用的DIP28封装库，适用于Autium Designer 的元件常用PCB封装(Common dip28 package library, common PCB packaging for autiumdesigner components)

实现PI+重复控制的有源电力滤波器（APF）(An active power filter (APF) that using PI+ repetitive control)

ldpc的算法介绍及其fpga上硬件实现(Introduction of LDPC algorithm and Its FPGA implementation)

schema lcd display sc75823

MC68340驱动TNT4882，实现GPIB接口通讯(TNT4882 in an MC68340 System)

AD9914是一款直接数字频率合成器(DDS)，内置一个12位数模转换器，目标工作速率最高达3.5 GSPS，产生单音信号，双音信号以及调幅调相信号(AD9914 is a direct digital frequency synthesizer (DDS) with a 12 digit analog converter with a target operating rate of up to 3.5 GSPS, producing a single tone signal, a dual tone signal and a phase modulation signal.)

抱闸控制器，用PWM方式控制电机抱闸，在有效开通抱闸情况下缓解抱闸发热(The brake controller, using PWM to control the motor brake, brake in effective opening off brake fever)