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.)
电路的连接图，程序都有注释，仿真平台protues，适合初学的人(The connection diagram of the circuit, the program has the annotation, the simulation platform Protues, suitable for the first student)
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.)
串口 的 ucos 驱动编程,应该比较有用(ucos serial driver CommGetChar CommGetTxChar CommPutChar CommBufInit)
常用的有源晶振封装库和原理图库，AD环境。(AD environment commonly used active crystal package library and schematic library)
SIM卡普通卡座封装，大卡普通手机用的SIM大卡封装 来自摘抄(SIM card common deck package comes from the excerpt)
采用STM32F105和FPGA设计的驱动液晶屏的电路图。(Circuit diagram of driving LCD screen designed by STM32F105 and FPGA)
单片机电容触摸屏硬件PCB设计，layout(Microcontroller, capacitor, touch screen, hardware, PCB design, layout)
CS5460芯片在MSP430单片机中的应用(Application of CS5460 chip in MSP430 single chip microcomputer)
A4988步进电机的驱动程序，使用STM32F407单片机驱动(A4988 stepper motor driver)
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.)
双闭环正激电路仿真，已验证输出，效果稳定，(Double closed-loop circuit simulation, verified output, stable effect,)
基于STM32F407实现人脸识别和指纹识别的考勤系统硬件设计。(Hardware Design of Time and Attendance System Based on STM32F407 for Face Recognition and Fingerprint Identification.)
基于74系列数字芯片的8层电梯控制器，Multisim13仿真(An 8- layer elevator controller based on 74 series digital circuit chip.)
比较接近实际硬件的IGBT 模型，可以做个参考(IGBT model approaching to actual hardware )
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