一个通讯系统的嵌入式实时数据库,经典啊，赶紧下载吧

51系列的软件包,有i2c驱动,各种芯片的介绍-51 series of software packages, there i2c driver, introduced a variety of chips

一个很好用的电子密码锁,采用STC12C5A60S2单片机,按键为4x4矩阵键盘                                                                                         

Dragonball I2C驱动-Dragonball I2C driver

温度监视器，通过按键来设定温度上下限，用DB18B20来显示温度，越限灯亮，蜂鸣器响，在KEILC下编译调试成功-Temperature monitor, through the button to set the temperature of the upper and lower limits, DB18B20 used to display the temperature, the more limited light, buzzer sound, in the debug compile successfully under KEILC

应用背景用于控制电梯或电梯，并用它来描述它的功能。关键技术这是Verilog  ；它是Verilog  ；它是Verilog  ；它是Verilog  ；它是Verilog  ；它是Verilog  ；它是Verilog  ；它是Verilog是Verilog  ；它是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是verilogit是Verilog

pcmic初始代码！--Startup code for pcmic.

HART协议由Rosemount公司开发且已向每个使用者开放HART协议采用标准的Bell 202频移键控信号以1200波特通信以低电平加载于4mA~20mA模拟信号上，由于载波信号的平均值为零所以它对模拟信号没有影响。-HART agreement develops by Rosemount Corporation also opened the HART agreement to each user to use the standard the Bell 202 frequency-shift keying signal increase by 1,200 bauds correspondences by the low level on the 4mA~20mA simulated signal, because intelligence signal mean value for zero therefore it has not affected to the simulated signal.

Protothreads are extremely lightweight stackless threads designed for severely memory constrained systems such as small embedded systems or sensor network nodes.

PS/2键盘源码，可在各种单片机运行，可以实现大写和小写，利用shift键-PS/2 keyboard source code can be run in a variety of single-chip, you can achieve uppercase and lowercase, using shift key

嵌入式系统的TCP、IP 协议栈说明书，具体讲述了什么是TCP、IP协议-The instructions of embeded system s TCP/IP,here descrab what is the TCP/IP