这是对51单片机RAM的扩展的程序 内有电路图，非常详细的注释...

is about the 51 and the LCD-is about the 51 and the LCD

一个用51MCU做电压表原代码.测式电压范围0~30V.电压精度50MV.-A voltage meter to do with 51MCU the original code. Measuring voltage range of 0 ~ 30V. Voltage accuracy 50MV.

使用键盘上的上、下、左、右四个按键，可以分别控制led1,2,3,4, 每个LED 对应的Port 请参考“实验平台介绍”说明文档。要求按下 上面提到的四个按键中间的一个按键后，该按键对应的led 被点亮，持续1 秒钟以后led 熄 灭。-Use the keyboard on the upper and lower, left, and right buttons, can control led1, 2,3,4, each LED corresponding to the Port, please refer to " experiment on" documentation. Requirements of the four above-mentioned press the middle button of a button, the button that corresponds to being light led, continuous 1 second later led out.

7290i2c软件包.rar可以实现多种功能的I2c

ic卡读写方式和内容，程序的模块化可用，比较方便，还可以-IC card reader formats and contents, procedures can be modular, more convenient, but also

实时时钟模块ds1302,内含原理图，适合学过汇编语言的人-Real-time clock module ds1302, containing schematics, assembly language to learn for those who

这是我用C语言写的一个数字钟，他可以实现多种闹钟和秒表功能-This is because I use C language written in a digital clock, he can achieve a variety of alarm and stopwatch functions, etc.

at89c51 读取写入24c64的C源代码-24c64 read write AT89C51 the C source code

DS18b20的运用，有示例代码，绝对可以运用-DS18b20 the use of sample code there is, is absolutely entitled to exercise

单片机正弦信号产生中改变正弦消耗频率时仍然保持采样频率的算法-SCM sinusoidal signal to change consumption frequency sinusoidal remained sampling frequency algorithm