Matrix-keyboard

高压直流输电模型，二百二十千伏的，有参考价值，做的挺不错(HVDC model, $ 220 kV, a reference value, doing pretty good)

AT89C51+液晶显示屏，按输入字符输出相应的显示，源代码为C语言编写，希望对大家有帮助。(The LCD of AT89C51+ screen display output according to the input character, the source code is written in C language, we hope to help.)

SAMSUNG S3C2440开发文档大全---(。)

direct sparse solver for linear equations

GC0111 是格科微电子（上海）有限公司2010 年最新研发的一款SOC 芯片， 将Sensor 和协处理器整合到了一颗芯片中，能实现的功能包括：支持EMI 接口 的sensor 预览/拍照/录像、SPI 接口的sensor 预览/拍照/录像、USB1.1 / USB2.0 full speed、 JPEG 压缩以及提供软T 卡、软Touch panel 的全套解决方案。GC0111 使得MTK 6223D/Infineon ULC3 等低端平台加一颗sensor 变成多媒体手机，降 低客户成本。 GC0110 是格科微电子（上海）有限公司最新推出的支持SPI 协议的CMOS 图像传感器芯片，采用GalaxyCore 最新的传感器工艺，并优化了电路结构，支 持JPEG 压缩，缩短拍照速度，提高用户体验，并支持录像功能。 (GC0111 is Geke Microelectronics (Shanghai) Co., Ltd. 2010, the latest development of a SOC chip Sensor and co-processor will be integrated into a single chip, to achieve the features include: support for EMI Interface The sensor Preview/photo/video, SPI interface sensor Preview/photo/video, USB1.1/USB2.0 full speed, JPEG compression and to provide soft-T card, soft Touch panel the full set of solutions. GC0111 Makes low-end platform MTK 6223D/Infineon ULC3 add a sensor into a multimedia mobile phone, drop Low customer cost. GC0110 is Geke Microelectronics (Shanghai) Co., Ltd. support the latest CMOS SPI protocol Image sensor chip, using the latest sensor technology GalaxyCore and optimize the circuit structure, support Support JPEG compression, reducing the speed camera to improve the user experience and supports video recording. )

51单片机串口调试程序一列,希望对大家有用(51 Single-chip serial debugging a program, in the hope that useful to everybody)

DDS9850，亲测可用，有中文解释，信号发生器(DDS9850, pro-test is available, there are Chinese explanation, the signal generator)

可以产生幅度、频率可调的方波，频率50hz到1M(Can produce the amplitude, frequency adjustable Fang Bo, frequency of 50Hz to 1M)

scaling triangle using scaling transformation algorithm

直流发电机的调速程序，使用的是STC12C5A的单片机，采用PWM技术来调节他的速度，简单便捷。(DC generator speed control program use is microcontroller of STC12C5A, and PWM technology to adjust his speed, simple and convenient.)